Originally posted by EthanolTurbo
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This was our Hot Rod Drag Week setup, 6MT, Euro headers, Karb Plenum, Alpha-N tune and 3.15 gears! We thought the car was heat soaking towards the end of the week so after we were officially finished we pulled the hood (ran the whole week with it sealed) and knocked out a 12.89 @ 107.6, we tried to back it up, but I'm not a great driver, lol.

Then at Sick Week the setup was ZF8, Stock intake with Dinan CAI, MAF tune and 3.15 gears.

Then a couple weeks ago I decided to put some gear in the car, my paperwork said it had a 3.46LSD in it and I never verified. When I got it a part I found it had a 3.15 ratio, I swapped in 4.44s and it completely woke it up down low. From a stop it would not spin the 275 RS4s, now there is not hope to keep them hooked up so I'm working on the traction now.
3.15s:

4.44s:

So it looks like my memory was a bit off, it trapped 108.xx (I really thought it went faster at the track, but I can't find the slips to back it up, maybe we were doing the match and showed it had the opportunity) at the track and then we backed up the other numbers with the dragy which were 110.xx. There is a private track down coming up at Texas Motorplex that I might go to and see if we can break these 325 axle shafts lol.

. BUT what's interesting is she still runs 111mph +/- in the quarter mile which from what I could find is as much as 7mph over a stock M3 which would then indicate the power is a decent more or maybe the drivetrain is less in lower gears. The other side is that the stock ZF8 equipped cars seem to make the same power with auto vs manual... is there programming to give the auto equipped cars more power considering drivetrain loss? IDK, lots of questions and we are just starting to try to answer them, ha.





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