whose 'full bolt on jhm' car is going up against this unitronic car?

B6/7 S4/RS4
#41

seriously…the hot air intake has been proven to be a terrible fucking idea on these cars.

Here’s a great example for you…

http://audirevolution.net/forum/index.php?topic=489.msg8791#msg8791

#42

Ok so I reaD the post but about 3 days ago I put the stock airbox in thE car. Now I need to get my k&n today then tada. just need a real catback lol. So close to being done for now lol.

#43

good stuff. Too bad we didn’t get you to log the car before/after. Would have been damn interesting.

#44

The plan is for 2 JHM cars to whoop up on this guy…lol I’m a little closer to the OP mod wise, but I am not lacking in the 2.5" exhaust department…FI 2.5" X-PIPE FTW

#45

what’s your full mod list?

#46

JHM tune / Milltek catless dp / FI 2.5” X-pipe cb / JHM LW front rotors / 034 silicone MAF hose / Apikol rear diff mount / Apikol snub mount / JHM intake spacer / TB heater bypass / JHM LWCP /

#47

What would you want logged between the hot air and the stock box?

I could throw my strat intake back on and log vs my k&n stock box

#48

003, 020, 021 3rd gear WOT pull from 1.5k rpm to 7.2k rpm on a flat road, record weather conditions

#49

I’ll get these tomorrow. Should be pretty easy to get it done without too much time between, even with swapping the hot air intake on in between

#50

the Milltek 2.5 downpipes neck down to 2.25 (and FI catback has an optional neckdown to 2.25) . Hopefully you’ve had that cut out and replaced with 2.5 stainless? That restriction is a bit of a waste of 2.5 goodness unfortuantely.

#51

Ya man, I definitely wouldn’t have spent the cash and the time to not be a true full 2.5". I had Danny at FI weld Vbands on the front of the cat back, and then he sent me the male flanges. I cut the necked down portion off of my millteks and welded a 2.5" extension to mate up, it’s really clean, the vbands seal with no leaks every time, and it’s also nice to have for ease of removal.

I’ll put a picture of the setup in my profile… http://audirevolution.net/view-image/610/fi-2.5"-setup

#52

^nice, thats how my 2.5" Milltek mashup was set up

#53

thanks Beemercer, I take pride in my installs, and I hate band clamps on exhausts!!

#54

Heres the two logs from tonight.

~Line 30 is where it starts in 3rd Gear
beem, make your fancy graph for us :stuck_out_tongue:

I did my best to try to insure the point in which I went WOT was exactly the same. I seemed to miss slightly the second time around as far as the starting point, but was pretty close.

Mod list : 2.5 catless DPs - 2.5" FI non res catback.

Here is weather information - this was within a couple hours of each other when I did the logs. Both times the car was completely cold, drove around to operating temp with about an extra 7-10 minutes of driving afterwards (was approximately 13 miles collectively until my “starting point” which was exactly the same) :

Stock airbox
48°F
Barometer
30 in
Wind
16 mph SSW
Dewpoint
28°
Humidity
46%

Strat Intake
45°F
Barometer
30 in
Wind
11 mph SW
Dewpoint
31°
Humidity
58%

StockAirboxLOG-01-003-020-021.CSV (5.71 KB)

StratIntakeLOG-01-003-020-021.CSV (4.43 KB)

#55

Lmeq, your car is running insanely strong for a non tuned car

Stratmosphere: 505 rpm/sec and a maximum of
Stock: 500 rpm/sec

So well within the margin off error. It would seem that with 2.5 exhaust and no tune, the intake is not the limiting factor on a high speed pull. Kind of what most of us were expecting I think.

#56

thanks for doing the test, I’m excited to play around with the logs later

#57

So the stock airbox was just about exactly the same as the aftermarket airbox? And this was on an ice cold day when heat soak isn’t nearly a factor (thus protecting the open element stratbox from it’s biggest weakness).

Interesting stuff. Can you imagine in the summer?

p.s. do you have the location of the road you used?

#58

Latitude : 41.817765
Longitude : -88.070781

#59

cool. Thanks for doing that test. It’s a pain in the ass and takes some effort, and you’re helping lots of S4 owners by doing so.

p.s. are you selling the strat intake?

#60

Trying to at this point. I’ve only got up on the AZ Classifieds.

Figure if I can’t move it by the time I get my JHM tune I’ll go ahead and do the test again with that.