APR CPS Parts question

B8 S4
#1

Hi everyone! Finally decided to get the APR supercharger cooling system for the S4. As per my signature I have the 2013 B8.5 Model. Now the questions:

  1. Do I need the ADS auxiliary cooler? I’ve been looking around and I’m confused if the 2013 models and later even need this piece. My shop says I need it but after doing some research it seems that some forums say that it is valid only for the B8 models and not the revised B8.5 with electronic steering.
  2. I’m not installing an RS4 aftermarket grill, actually love the stock sleeper look :wink: . So, with that in mind do you recommend the screen to protect the intercooler.
  3. Do the new units still come with a pump or is it the revised version v2.0 without the pump. APR website seems confusing from what I’ve researched. Old units had pump and supposedly now only the reservoir is needed and pulp doesn’t come with it.
    Did or am I missing something here…?
    I’ve messaged APR but they haven’t gotten back to me yet. I’m sure they will, always do but I feel I’ll get answers here a little faster and they’ll be more accurate, lol. Hope to see some of you’ll at the track this fall and thanks in advance for any and all feedback. Cheers
#2

No clue on #1 sorry…

I’d do the screen, I didn’t but plan to when I swap the blower…

The new version comes with the bigger tank and no pump… I’m keeping the pump and going to add the bigger tank(I think it’s possible may require some custom work) when I swap the blower, along with the protection screen and RS grille…

#3

HHHM, ok sounds good will look into everything twice and thrice…thanks Prime. Do you think airflow will be good without the RS4 grill has been in the back of my mind but don’t want to change the look of add extra expenses on daily driver…

#4

PS. Can’t wait to see what happens with the new blower setup, lol. More money that can be allocated for more fun lol.

#5

Airflow is fine with the stock grille. I added a protection screen attached to the back of my grille, but AMS didn’t think it was completely needed. They use (and I am sure APR is similar) a hemmed fin design that is much stronger and more durable than the fins on the stock unit. The hemmed design essentially folds over the front edge of the fin making it much stronger. Either way, the protection screen can’t hurt, and it will keep your rather expensive radiator looking nice. Just make sure you don’t use something too restrictive as the screen does impede airflow to some degree…

#6

Yeah, I’m with jran, airflow is fine with either grille… I’ll do RS for looks as IMO it’s much nicer… I also have a front plate which I’ll delete, it’s a requirement in OH but I haven’t got stopped in the RS and they’re pretty laxed… The CPS or any of the others is a good mod for sure…

Yeah, blower should be sweet from the sounds of it and what I’m hearing…

#7

You don’t need the aux cooling kit. Only possible exception is if you have the adaptive steering, but even then, I don’t think it has the same heat exchanger. You should be able to look through and see it. It’s an awkward u shaped bar that is quite noticeable.

I put some small dents in my ams kit by accidentally dropping a bolt on it while it was drying from rad paint. You can certainly do a screen, but not sure if is necessary.

#8

I will take the cover off and look because the shop I use said I need it. They also said that the CPS comes with a pump but I’m going to look over the parts and speak to them before anything is installed. I do not want the older V1 version and would prefer the new larger capacity tank. If it comes with pump and larger tank that fits without mods as per Primetimes plan I’ll keep it. We will see what comes of this. Either way can’t wait to gilet this done and taking her tracking as soon as DA’s allow but from what I noticed the Barometric Pressure around here has been steadily moving up and staying about the 30.00 mark, will watch the patterns and get ready accordingly…

#9

I’ve had the kit for over two years and it’s great. For the first few months of ownership you must periodically check the reservervoir and fill it, as the air bubbles work their way out of the system. Make sure your shop has the vacuum pump system that can evacuate as much as possible out of the system. The main issue is that the supercharger is higher in the engine bay than the reservoir, because of the way the hood slopes down. The nice part is since that loop isn’t pressurized, you can check it when it’s hot.

I consistently notice supercharger coolant loop temps are 35 degrees F below the engine loop, after all day track abuse in moderate to high ambient temps. If I’m driving like a real asshole in 105+ weather the loops can get equal in temp. I have the older kit that has the supplementary pump. I don’t have the ADS cooler (6MT P+ model). I’m not sure I would upgrade to the higher capacity tank. I don’t believe I would measure any meaningful delta in loop temperatures, but I might be surprised.

Overall you will notice that your first pull on track makes as much horsepower as your last pull. I’ve even done a dyno run at lunchtime during a track day and it posted great numbers, 365 whp.

#10

Yes the main reason I offered the CPS was the need for consistency all year round and the requirement of keeping the supercharger safe and cool especially after having stage 2 and pulley for over two (2) years now. I wouldn’t want anything to overhear and go BOOM…! That would be a huge bummer. Thanks for the assistance and knowledge that all of you ways provide it is priceless and unbiased compared to other people I have spoken to… Cheers

#11

Just got the news that APR CPS is in installed and ready to go. Don’t know if the ADS auxiliary was used or not. If it was not I’ll be refunded my money for the part and off I go. Will let you know how the car feels when I pick it up tomorrow, should also have pics of the parts and install. We’ll see about that hope they didn’t forget to take them, S hit happens sometimes. Thanks all for the all your feedback and help with the project. Will keep an eye on water levels and make sure system has been burped properly. Also, when I have a chance hopefully in a track day, if I can make it there anytime soon, I’ll get some logs and see what the differences will be using 93 octane fuel ex. Timing, IAT’s, boost dump, knock sensor, timing retard…etc. Cheers

#12

They obviously forgot to take pictures but CPS install looks nice and clean. Haven’t logged yet too busy with work and family matters. Not that you guys don’t know what it does for IAT’s and performance but I’ll try and do some logging as mentioned earlier in the thread. Thanks for all the advice and PS I was told that I needed the ADS piece. Now I need to drive her a couple of hundred miles and check the reservoir level. I it up the other day after the car sat for 5-6 hours and it spewed some coolant (ever so little) because I was careful so i take it the systems pressurized after all. Heard out there on the world wide net and some people said it wasn’t but I beg to differ. Any suggestions on this subject might help with burpeeing the system again,let me know. The ship did use a Vaccum when they installed system to pressurize it. Thanks as always and all of you’ll have a great weekend.

#13

I just add cheap bottled water to it when it’s low. Water has higher thermal capacity of coolant. It doesn’t freeze in my climate and there’s plenty of coolant in the system already to keep me liquid down to about 0F.

#14

Ok, now what’s with the reservoir spewing out coolant even after 5-6 hours… I take it I need to let it cool down longer and maybe drive it around more before I start messing around with it, lol.

#15
#16

Alright, I ran a scan found something’s I didn’t like…one was supercharger pump failure.??? And the others I have no clue… Also posted copy on boro’s thread about the diff not working, anyway. Also have some logs driving around and some soft launches to see what CPS is doing. Seems to be working but can’t understand about pump as I said above.

Sent from Windows Mail

Monday,31,August,2015,22:36:57:04409
VCDS – Windows Based VAG/VAS Emulator
VCDS Version: 14.10.2.0 (x64)
Data version: 20150311
www.Ross-Tech.com

VIN: License Plate: STEVES4
Mileage: 35390km-21990mi Repair Order:

Chassis Type: FL (8R0)
Scan: 01 02 03 05 08 09 15 16 17 19 22 36 42 44 46 47 52 53 56 5F
62 6C 72 A9

VIN: Mileage: 35390km-21990miles

01-Engine – Status: Malfunction 0010
02-Auto Trans – Status: OK 0000
03-ABS Brakes – Status: OK 0000
04-Steering Angle – Status: OK 0000
05-Acc/Start Auth. – Status: OK 0000
08-Auto HVAC – Status: OK 0000
09-Cent. Elect. – Status: Malfunction 0010
15-Airbags – Status: OK 0000
16-Steering wheel – Status: OK 0000
17-Instruments – Status: OK 0000
19-CAN Gateway – Status: Malfunction 0010
22-AWD – Status: OK 0000
36-Seat Mem. Drvr – Status: OK 0000
42-Door Elect, Driver – Status: OK 0000
44-Steering Assist – Status: OK 0000
46-Central Conv. – Status: OK 0000
47-Sound System – Status: Malfunction 0010
52-Door Elect, Pass. – Status: OK 0000
53-Parking Brake – Status: OK 0000
56-Radio – Status: OK 0000
5F-Information Electr. – Status: OK 0000
62-Door, Rear Left – Status: OK 0000
6C-Back-up Cam. – Status: OK 0000
72-Door, Rear Right – Status: OK 0000
A9-Struct. Borne Sound – Status: Cannot be reached 1100

Address 01: Engine (J623-CGXC) Labels: 06E-907-551-CGW.clb
Part No SW: 8K5 907 551 E HW: 4G0 907 551 A
Component: 3.0l V6 TFSIH07 0002
Revision: --H07—
Coding: 0A250034052600060000
Shop #: WSC 06208 000 00000
ASAM Dataset: EV_ECM30TFS0218K5907551E 001002
ROD: EV_ECM30TFS0218K5907551E.rod
VCID: 383CE27B8342B2E196F-806D

2 Faults Found:
8900 - Coolant Pump for Intercooler
P190D 00 [040] - Mechanical Malfunction
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 35233 km
Date: 2015.08.26
Time: 14:10:04

6143 - Fan 2 Control Circuit
P0693 00 [045] - Short to GND
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 3
Mileage: 35233 km
Date: 2015.08.26
Time: 14:09:00

Readiness: 0000 0000

Address 02: Auto Trans (J217) Labels: 0B5-927-156.clb
Part No SW: 8K2 927 156 M HW: 0B5 927 156 J
Component: 0B5 30TFSINAR H02 0009
Revision: --H02—
Coding: 000001
Shop #: WSC 06325 000 00000
ASAM Dataset: EV_TCMDL501021 001012
ROD: EV_TCMDL501021.rod
VCID: 40CC8A9BDB92FA212EF-8015

No fault code found.

Address 03: ABS Brakes (J104) Labels: 8K0-907-379.clb
Part No SW: 8K0 907 379 CK HW: 8K0 907 379 CK
Component: ESP8 quattro H09 0100
Revision: -------- Serial number: --------------
Coding: 291D1A
Shop #: WSC 06325 000 00000
VCID: 0444468B870A26014A7-8051

No fault code found.

Address 05: Acc/Start Auth. (J393) Labels: 8K0-907-064-05.clb
Part No SW: 8K0 907 064 GM HW: 8K0 907 064 FM
Component: BCM2 2.0 H12 0633
Revision: 00002001
Coding: 0D814000000000000000
Shop #: WSC 06325 000 00000
VCID: 014A4F9F98183329611-8054

Subsystem 1 - Part No SW: 8K0 905 852 E HW: 8K0 905 852 E
Component: J764 ELV MLB H40 0046

No fault code found.

Address 08: Auto HVAC (J255) Labels: Redir Fail!
Part No SW: 8K1 820 043 T HW: 8K1 820 043 T
Component: KLIMA 3 ZONEN H04 0121
Revision: C1000000 Serial number: 01200420130516
Coding: 6600228000
Shop #: WSC 06325 000 00000
VCID: 393AE77FB048ABE9691-806C

No fault code found.

Address 09: Cent. Elect. (J519) Labels: 8K0-907-063.clb
Part No SW: 8K0 907 063 DH HW: 8K0 907 063 DH
Component: BCM1 1.0 H16 0103
Revision: 08016001 Serial number: 00000046375002
Coding: 26000091863CAFE0210048C300003D0D0F9CD308A2090221000008004000030100000030000000
Shop #: WSC 06325 000 00000
VCID: 78BC227BCBC272E156F-802D

Subsystem 1 - Part No SW: 8K1 955 119 A HW: 8T1 955 119 Labels: 1KX-955-119.CLB
Component: WWS 020413 H07 0080
Coding: 00FD11

Subsystem 2 - Part No SW: 8U0 955 559 B HW: 8U0 955 559 B
Component: G397_RLFS H06 0002
Coding: 02005D

Subsystem 3 - Part No SW: 8K0 941 531 AS HW: 8K0 941 531 AS
Component: E1 - LDS H03 0031

Subsystem 4 - Part No SW: 4G0 907 410 A HW: 4H0 907 410 A
Component: USHL4.2 H30 0030

Subsystem 5 - Part No SW: 4H0 907 658 HW: 4H0 907 658
Component: AQ_Hum_Sensor H03 0003

3 Faults Found:
02258 - Door Opener Transmitter
004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 3
Fault Frequency: 1
Reset counter: 41
Mileage: 35233 km
Time Indication: 0
Date: 2015.08.26
Time: 14:09:24

01496 - Bulb for Fog-Lamps; Left (L22)
012 - Electrical Fault in Circuit - Intermittent
Freeze Frame:
Fault Status: 00101100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 42
Mileage: 35233 km
Time Indication: 0
Date: 2015.08.26
Time: 14:10:58

01500 - Bulb for Fog-Lamps; Right (L23)
012 - Electrical Fault in Circuit - Intermittent
Freeze Frame:
Fault Status: 00101100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 42
Mileage: 35233 km
Time Indication: 0
Date: 2015.08.26
Time: 14:10:58

Address 15: Airbags (J234) Labels: 8K0-959-655.clb
Part No SW: 8K0 959 655 P HW: 8K0 959 655 P
Component: AirbagVW-AU10 H45 0610
Serial number: 003KJD91NWC3
Coding: 303844354730303030304A55304C384B3053
Shop #: WSC 53951 001 1048576
ASAM Dataset: EV_AirbaECUVWAUDI010 003010
ROD: EV_AirbaECUVWAUDI010_AU48.rod
VCID: 4AD8A8B3EDAE3071F0B-801F

Seat occupied recognition:
Subsystem 1 - Part No SW: 8K0 959 339 C HW: 8K0 959 339 C
Component: BF-Gewichtss. H02 0040
Serial number: 5810000R130000DAW9

Crash sensor for side airbag; driver side:
Serial number: 6334MSME783246306

Crash sensor for side airbag; front passenger side:
Serial number: 6344MSME7A705A17L

Crash sensor for side airbag; rear; driver side:
Serial number: 6352QSME5B302746F

Crash sensor for side airbag; rear; passenger side:
Serial number: 6362QSME5B2D094E-

Crash sensor for front airbag; driver side:
Serial number: 63732SME2D2F28705

Crash sensor for front airbag; front passenger side:
Serial number: 63832SME2D2F23420

No fault code found.

Address 16: Steering wheel (J527) Labels: 8K0-953-568.clb
Part No SW: 8R0 953 568 S HW: 8R0 953 568 S
Component: Lenks.Modul H07 0171
Revision: 00000000 Serial number: 20130423000290
Coding: 000036
Shop #: WSC 06325 000 00000
VCID: 51EABFDF08F803A9B11-8004

Component: E221 - MFL H03 0004

No fault code found.

Address 17: Instruments (J285) Labels: 8T0-920-xxx-17.clb
Part No SW: 8K0 920 982 L HW: 8K0 920 982 L
Component: KOMBIINSTR. H35 0556
Revision: 00400000 Serial number: UVU64F94E
Coding: 8BB709008301D705020000
Shop #: WSC 06325 000 00000
VCID: 3D32F36FA46097C9459-8068

No fault code found.

Address 17: Instruments (J285) Labels: 8T0-920-xxx-17.clb
Part No SW: 8K0 920 982 L HW: 8K0 920 982 L
Component: KOMBIINSTR. H35 0556
Revision: 00400000 Serial number: UVU64F94E
Coding: 8BB709008301D705020000
Shop #: WSC 06325 000 00000
VCID: 3D32F36FA46097C9459-8068

No fault code found.

Address 19: CAN Gateway (J533) Labels: 8T0-907-468.clb
Part No SW: 8R0 907 468 N HW: 8R0 907 468 C
Component: GW-BEM 4CAN-M H11 0056
Revision: 1Y070028 Serial number: 2841Y134140111
Coding: 80C303FF00
Shop #: WSC 06325 000 00000
VCID: 4AD8A8B3E5AE3071F0B-801F

Subsystem 1 - Part No SW: 8T0 915 181 HW: 8T0 915 181
Component: J367-BDMHella H03 8041

1 Fault Found:
03619 - Control Module for Structural Accoustics
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 180
Mileage: 29860 km
Time Indication: 0
Date: 2015.04.21
Time: 12:49:26

        Freeze Frame:
               Bin. Bits:    11111
               Voltage: 13.10 V
               Count: 6
               Bin. Bits:    00000
               Time: 4.90 s

Address 22: AWD (J492) Labels: 8K0-907-163.clb
Part No SW: 8K0 907 163 B HW: 8K0 907 163 A
Component: 4 Wheel Drive H14 0100
Serial number: 000704130001414
ASAM Dataset: EV_AllWheelDiffeQSPCAN 003019
ROD: EV_AllWheelDiffeQSPCAN.rod
VCID: 2F2ED927760C7559C75-807A

No fault code found.

Address 36: Seat Mem. Drvr (J136) Labels: 8T0-959-760.clb
Part No SW: 8K0 959 760 D HW: 8K0 959 760 D
Component: MEM-FS H06 0076
Revision: AA000000 Serial number: 00000057114738
Coding: 00581B00000000000000
Shop #: WSC 06325 000 00000
VCID: 3B36FD77BA7499F97BD-806E

No fault code found.

Address 42: Door Elect, Driver (J386) Labels: 8K0-959-793.clb
Part No SW: 8T0 959 793 P HW: 8T0 959 793 G
Component: TSG FA H09 0304
Revision: -------- Serial number: --------------
Coding: 011C13204E00410001
Shop #: WSC 06325 000 00000
VCID: 56E04CC321166491643-8003

No fault code found.

Address 44: Steering Assist (J500) Labels: 8K0-909-144.clb
Part No SW: 8K0 909 144 F HW: 8K0 909 144 B
Component: RCEPS H37 0507
Revision: 00001000 Serial number: 0014398095
Coding: 100000010001
Shop #: WSC 06324 000 00000
ASAM Dataset: EV_RCEPSAU48X 008014
ROD: EV_RCEPSAU48X.rod
VCID: 3424D64B9F2A5681BA7-8061

No fault code found.

Address 46: Central Conv. (J393) Labels: 8K0-907-064-46.clb
Part No SW: 8K0 907 064 GM HW: 8K0 907 064 FM
Component: BCM2 2.0 H12 0633
Revision: 00002001 Serial number: 0305247425
Coding: 0106023A00FA400580B0013200000000
Shop #: WSC 06324 000 00000
VCID: 014A4F9F98183329611-8054

Subsystem 1 - Part No SW: 8K0 959 719 B HW: 8K0 959 719
Component: GTO BF H01 0080

Subsystem 2 - Part No: 1K0 951 605 C
Component: LIN BACKUP HO H05 1501

Subsystem 3 - Part No SW: 8K0 959 591 B HW: 8K0 959 591
Component: J245 PS050 H08 0043

No fault code found.

Address 47: Sound System (J525) Labels: 8T0-035-223-BOM.clb
Part No SW: 8T1 035 223 A HW: 8T1 035 223 A
Component: DSP Prem H05 0030
Revision: 00005001 Serial number: 94813013657002
VCID: 2D12C32F74000749F59-8078

1 Fault Found:
03278 - Functionality Limited due to Missing Messages
000 - -
Freeze Frame:
Fault Status: 01100000
Fault Priority: 6
Fault Frequency: 1
Reset counter: 235
Time Indication: 0

        Freeze Frame:
               Voltage: 12.50 V
               Temperature: 47.0°C
               Temperature: 49.0°C
               Bin. Bits: 00000100
               Bin. Bits: 00001000
               Bin. Bits: 00000000

Address 52: Door Elect, Pass. (J387) Labels: 8K0-959-792.clb
Part No SW: 8T0 959 792 P HW: 8T0 959 792 G
Component: TSG BF H09 0304
Revision: -------- Serial number: --------------
Coding: 011C13204E00410001
Shop #: WSC 06325 000 00000
VCID: 55E24BCF3C106F896D9-8000

No fault code found.

Address 53: Parking Brake (----) Labels: 8K0-907-801-V2.clb
Part No SW: 8K0 907 801 L HW: 8K0 907 801 J
Component: EPB-4 H01 0003
Revision: -------- Serial number: 30000000041841
ASAM Dataset: EV_ParkiBrake 001027
ROD: EV_ParkiBrake_AU48.rod
VCID: 383CE27B8342B2E196F-806D

6 Faults Found:
334080 - Function Restricted due to Missing Message(s)
U1111 00 [000] - -
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:

329728 - Function Restricted due to Missing Message(s)
U1111 00 [000] - -
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:

329984 - Function Restricted due to Missing Message(s)
U1111 00 [000] - -
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:

331264 - Function Restricted due to Missing Message(s)
U1111 00 [000] - -
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:

331520 - Function Restricted due to Missing Message(s)
U1111 00 [000] - -
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:

331776 - Function Restricted due to Missing Message(s)
U1111 00 [000] - -
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:

Address 56: Radio ® Labels: Redir Fail!
Part No SW: 4G0 035 082 E HW: 4G0 035 082
Component: Radio U SIRIU H60 0121
Revision: AB001007 Serial number: 156D-0D7717108
Coding: 020007010000000001
Shop #: WSC 06325 000 00000
VCID: 220820133DDEC83158B-8077

No fault code found.

Address 5F: Information Electr. (J794) Labels: 4E0-035-6xx-5F.clb
Part No SW: 8R1 035 746 C HW: 8R1 035 746 B
Component: H-BNT-NA H44 0624
Revision: -------- Serial number: 204DU0D7574008
Coding: 110200000206A1EF45028B4E00000403140000000000000000
Shop #: WSC 06325 000 00000
VCID: 373EE147865CBD999F5-8062

Subsystem 1 - Part No: 8R0 060 884 BA
Component: NAR 2013 0703

Subsystem 2 - Part No SW: 8R0 919 604 A HW: 8R0 919 604 A
Component: DU7 High H42 0104

Subsystem 3 - Part No SW: 8T0 919 611 L HW: 8T0 919 611 C
Component: E0380 Bedient H02 0030

Subsystem 4 - Part No: 8R0 060 961 E
Component: CD-Database 4949

No fault code found.

Address 62: Door, Rear Left (J388) Labels: 8K0-959-795.clb
Part No SW: 8T0 959 795 Q HW: 8T0 959 795 H
Component: TSG HL H07 0304
Revision: -------- Serial number: --------------
Coding: 010C13204000210001
Shop #: WSC 06325 000 00000
VCID: 59FA47FF50084BE9491-800C

No fault code found.

Address 6C: Back-up Cam. Labels: 4L0-910-441.clb
Part No SW: 8T0 907 441 C HW: 4L0 907 441 B
Component: J772__Rearview 0040
Revision: --H07— Serial number: 525PA8-J3190QC
Coding: 1000006
Shop #: WSC 06325 000 00000
VCID: 383CE27B4B42B2E196F-806D

No fault code found.

Address 72: Door, Rear Right (J389) Labels: 8K0-959-794.clb
Part No SW: 8T0 959 795 Q HW: 8T0 959 795 H
Component: TSG HR H07 0304
Revision: -------- Serial number: --------------
Coding: 010C13204000210001
Shop #: WSC 06325 000 00000
VCID: 59FA47FF50084BE9491-800C

No fault code found.

Address A9: Struct. Borne Sound
Cannot be reached

End-------------------------(Elapsed Time: 02:46)--------------------------

#17

AND…here are the logs… Can’t make to track yet but figured real world driving would show something…

https://www.dropbox.com/s/vvevl2ophzsfvmn/log-01-031-101-231-481-1311-2231-2251-2271-4691-4741-5971%202.xlsx?dl=0

#18

Having a lot of trouble getting all the air out of the system. Although the guys at the shop pumped the system with a Vaccum at least 3-4 times the other day, when the car is running there’s still air and it’s causing pressure in the cps. Basically, it’s sucking fluid up and down when engine is running. We called APR and supposedly there is only one guy that has the secret guru black magic tricks to get all the air out. Any suggestions from the brain trust on here…?

#19

what if you crack open the supercharger bleed screws? or is this the engine circuit?

#20

We did that also, it helped some. Now the heat exchanger is finally getting warmer which means it’s starting to do its job but prior to this it stayed cold even after thrashing the car a few times in a row. From the looking at the logs before and after the IAT’s were almost identical. No I take it that since the system has been separated it’s not part of the engine circuit any longer.