next time then 
your car moving yet? have you got Danny’s car or is it at MRC?
Not yet. I could write a book on this clutch, one day I might. MRC have Dannys car at the mo.
Hello !
My first post over here . Pleased to meet you all .
Would like to add a comment ( my opinion , Im not claiming its better than anybody else`s )
3 . We all know dynos can be manipulated . It will be repeated ad infinitum but the shape of the figure will give some info .
- Fuel pump mods ? Do you mean low pressure fuel pump (the one in the reservoir ) or the high pressure fuel pumps ?
I tested the low pressure side to about 650 hp and gave up. No pressure loss even at that level.
I`m not saying I tested the engine or the car to 650 hp. Just the low pressure fuel debit.
400 hp ish (should be more but hey … ) engine hp and an approximated 250 hp worth of flow from the nitrous system.
The high pressure fuel side is good for about 350 hp per side safe and 380 ish hp if you push it and know what you are doing. Turns out the flow is insufficient in the mid-range rather than at high speeds but that argument is valid for the boost related qualities of turbochargers (which will give higher boost in the midrange). Also , a fix for the 2l tfsi was to add a rs4 pressure regulating valve (which we obviously already have) .
With upgraded fuel lines and a better fuel pump the otherwise stock rs4 fuel system should be good for 700 ish safe hp.
What anybody pushing over 600 - 650 hp with a supercharger should do is use the s3 injectors (due to the different spray pattern) . Given the fact that the RS4 uses the same head geometry (same valve sizes and angles) and also same intake tracts (size and shape) as the 2l tfsi you could use some of the info they gathered from mistakes .
Also , I think delta-v is right on the supercharger argument (a smaller charger and a bigger charger producing the same maximum airflow will produce different values everywhere else on the map, maybe comparable but different ) .
@ Horsepower : quick fix for the clutch , use a different pressure plate. The one supplied by jhm is made under license (arent they all ? ) but the supplier has some quality issues. I had the same problem. Changed for an oem (as in bought from audi dealership) pressure plate and didnt have issues.
Also be careful with torque for flywheel bolts and pressure plate bolts. Lots of Loctite bolt glue (can`t remember the name) . Replace both types of bolts after each torque-ing down.
How much more would the kit cost using laminova intercoolers ? Was this even considered ?
^nice to have you over here
Hi Duud40,
We have not really seen the same results that you are saying you have seen. (Maybe its dyno dependent on bhp numbers though)
The low pressure pumps are indeed good for in the region of about 650bhp on our kit. We have data logged extensively and at the tts kit power level is what we would call right on the upper limit of the stock low pressure side (it is possible that this could be fuel line size rather than pumps though) I f you data log the ecu’s requested fuel pressure and the actual fuel pressure measured at the sensors in the lines then the ecu is actually requesting in the region of around 6 bar from memory, the actual pressure at the sensor is about 5 to 5.5 bar. So we personally would not wish to go any further than that on the stock system.
As for the high pressure side, On our install the high pressure pumps where only good for around 560-570bhp total. They would get to around 7000 rpm @ a requested 140 bar pressure and promptly shit themselves. I think they nose dived to around 90 bar. (Again it was a while ago so I can’t quite recall the exact data log numbers)
This is why we change the high pressure pumps in our kit.
Interesting advice on the injectors, however it is the case that there are always things you can do to any kit to make them better but it just comes down to price, adding a full set of injectors to the kit would probably add the best part of £1000 to the total cost of the kit. We have to stop somewhere or it will just end up being another mtm price level product
I am glad you agree on the supercharger debate, Actually after my last post on here I actually went away and had a chat with the MD of rotrex and we sat down and did a full and proper plot on both the rotrex c38-91 and the vortech v3si, The results where clear to see and it was indeed as I had said. The WOT plot line on the vortech is further to the left on a comparable graph meaning it is less efficient in the midrange than the rotrex.
This was assuming that the In the Vortech map the 625hp point correspond to 75,88 Lb/min, which converted to kg/sec on the 91 map its 0,573 kg.
Regarding laminover cores…don’t even go there! lol.
Our first prototype kit used them, and despite communications with one of there technical guys on projected heat dissipation and pressure drop the real thing was a total flop! We where lead to believe that the total pressure drop across the design would be 0.2 bar. In reality we had 0.2 bar across each core (there where 6 of them. 2x rows of 3. Which meant I think we managed to make something in the region of 2 psi at the engine. lol. Never again in this sort of configuration! Not to mention the price as they are expensive little suckers.
Thanks for the clutch info. Very useful. Infact I have bought the OEM pressure plate to try next with the JHM friction plate. I really hope this holds, 50 man hrs on this already and no publicity. I have to say the Kurt at JHM has been exceptional in his service to date. I can’t fit it for another week as we’re stacked out with work. Mainly Audi supercharger kits I have penciled in another drag event on the 28th, here’s hoping.
funny, the supercharger thread on RS246 has the usual objections to dragstrip times.
horsepower/delta…would you please let those guy know that a damn supercharger kit is TO ADD POWER AND ACCELERATION. How those guys are saying ‘dragstrip times aren’t a measure of the RS4…it’s all about handling and cornering as well as power’.
Do these guys not understand that they’re posting in the supercharger thread? Do they want us to measure the TTS kit with some slalom times or maybe braking distance? lol
Remember…this was in the SUPERCHARGER thread…the discussion about going to Santa Pod came up in the TTS RS4. Here’s some of the replies…I am not making this shit up. IT’S A SUPERCHARGER GUYS!!!
[quote=“bam_bam”]Since when did the 1/4 mile become a measure of a mod? I don’t remember it being an issue with the development of the B5s, the C5s, the C6s. Now, all of a sudden, the B7 is a dragstrip weapon?
[/quote]
[quote=“P_G”]Here here. Have we not been through the pro and cons of dragging and that a lot of time, sometimes more than the gains of the modification, can be made in a good start. Surely what MRC have done in visiting various dynos apart from their own and the performance on track days is justification enough for some and importantly those who want to invest their money in a TTS kit. And if that isn’t enough as Doug says there are cars to sample before you buy?
[/quote]
[quote=“PetrolDave”]Have to agree with you bam_bam that 1/4 mile times are of little/no relevance to most people. IMHO any fool in any over powered car can go fast in a straight line, but the real plus point of the RS4 is that it’s NOT just about straight lines it loves corners too.
[/quote]
[quote=“rs4blacked”]
+1 Any car can be made to go fast in a straight line, the RS4 can do this just as well around corners out of the box a good all round car IMHO.
[/quote]
It’s exhausting trying to have a discussion about performance parts and measuring that performance. None of them bat an eye when a 60-130 or other pBox data is posted. None of them bat an eye at dyno results. But mention the dragstrip and they all cringe and recoil as if their car has been ‘reduced’ to some sort of stripped out 1970s US domestic shitbox that’s sole purpose in life is to go 1320 feet. IT’S A FUCKING STANDARD TEST!!!
Saki I have been dragracing since I was 17, thats 41 years and I love it. Its generally been bikes and I run a supercharged Busa. I concur what you are saying. I could only manage a 13.6 with the stock S5 and would love to drop into the 11’s with my mods and I am sure its possible. My target is Santa Pod on the 28th, this should give me time to get the latest clutch back in and bedded in (where have I heard that before 
)
There is still a lot in technique as well as power though. Its not totally clear cut. Last time I took my bike to the Pod I ran mid 9’s struggling with throttle/clutch control but the last run I went 8.61 with the same 170mph terminal as my previous 9.2. I know that it will run 7’s it just takes practice.
The last time I went with the S5 the clutch was bad and I didn’t even report going (1 run with no second gear engagement and an aborted run and going home with my tail between my legs). But the launch was crap I ran 2.1 with all 4 wheels tramping off the deck. So I know I will have to tame the beast to get the best out of it. I’m getting pretty pissed at not getting the opportunity I can tell you.
yeah, traps are more steady, while ET will be a bit more variable.
In an AWD Audi, with normal brisk shifting, the ET range should be pretty much 2-3 tenths at this level unless something goes wrong (missed shift…bogged launch etc.)
since it’s a Cfuge, I don’t imagine it’s super torquey off the launch (or maybe it is)…I’d imagine it builds more than is like an on-off switch like the TVS blowers for example. For that reason, launching will probably be more stock like. Try low RPMs (2900-3000) to see how it goes. 2900-3000 worked best…as did trying to work into it (i don’t want to say slip).
When I was trying 3500 rpm launches on my rs4 I was just leaving this behind.
http://audirevolution.net/addons/albums/images/397621367.jpg
Compared to other superchargers we’re not missing out any torque we’re just making a load more top end so I probably suffered from trying to hard. I like your softly softly appoach. It will be interesting.
Or you can try this : http://www.youtube.com/watch?v=DlqR9_SxEik&feature=g-upl&context=G28b8548AUAAAAAAACAA and after 30-40 iterations you end up with this :
Wow, I didn’t realize it was that bad. That’s just…so ignorant…wow. I’m truly flabbergasted.
;D ;D ;D I remember the first time you posted that on AZ or somewhere. People were cringing and shocked!
That clutch… :o
Wait… You’re 58??
Next month, coming over to party ;D I think I will treat myself to a 7 sec 1/4 for my birthday. on the busa, and a nice low 11 in the S5 8)
They aren’t Twin-Screw my friend. They are 4 lobed Roots superchargers with twin-screw efficiency. Superior low-end torque and power under the curve to most if not all styles of smaller displacement superchargers.
here is a quote from the website and the link.
Quote: [quote]
TVS Supercharger
Eaton’s new Twin Vortices Series (TVS) is a Roots-type supercharger for a variety of engine applications that delivers more power and better fuel economy in a smaller package, for uncompromising, high-performance driving.
The TVS supercharger’s patented design features four-lobe rotors and high-flow inlet and outlet ports that greatly enhance thermal efficiency, deliver higher volumetric capacity, and enable higher operating speeds. The TVS supercharger is capable of running with a high thermal efficiency (up to 76 percent) across a very wide operating range.
The improvements incorporated into the TVS design allow for the use of a smaller supercharger, reducing the package size and weight of the system. The sizes range from 350cc to 2300cc per revolution, and cover engines from 0.6 liter up to large displacement V-engines. All TVS superchargers have a 2.4 pressure ratio capability and a thermal efficiency that exceeds 70 percent, which enables more compact packaging and greater output.
The twin four-lobe rotors feature 160-degree twists. The higher helix angle of the rotors coupled with a redesigned inlet and outlet ports, improves the TVS’s air-handling characteristics without increasing the overall size of the unit. The TVS improved noise and vibration characteristics eliminate additional noise-reduction treatments, complexity and system cost.
The TVS Roots supercharger sets a new standard of boosting device performance and reaffirms Eaton’s leadership in the performance automotive market.
[\quote]
http://www.eaton.com/Eaton/ProductsServices/ProductsbyCategory/Automotive/AutomotiveAftermarket/Superchargers/PCT_340164
Haha!! Nice. I thought I was the old man on the site, but you got me beat. Happy early Birthday!!
tweet I don’t know who you’re referring to? You quoted me, then mentioned twin screw supercharger…?
oh I see, I put twin screw on page 1. Twin vortices threw me for a loop. edited