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turbo'd gtp vs 01 t/a a4

fst

New member
heres the car's mods:
younger brother
01 t/a A4
LT headers and custom catback
LID

me
98 gtp
Z7 Turbo kit w/T66
Stock cam and valvetrain shifting at 5700RPMs
untuned running on 13psi and ~20* of timing
3.29 gears

we started at ~50mph and i brake-boosted while he started in Drive 2. he honked but since i was brakeboosting i cant hear anything but my exhaust and BOV. so i waited til he went first and he did. he jumped a car length while my car downshifted to 2nd gear. we reminaed that position all the way up to ~125mph wheere i stopped since i dont want the car to shift into 4th plus going any faster is pointless.

earlier b4 our race my brother lined up against his buddy in a nissan 240sx with a SR20DET running 20psi(max boost on that turbo so im guessing stock?). he also has a short shifter and running ~11.5AFR. they went at a 40mph roll where the T/A starting pulling away around 100mph. i got this race on my crappy cellphone and will try to upload it on youtube or some online media that supports flash(my phone runs a *.3a2 file extension and youtube screws up the audio ).

my brother and i will be racing again. he claims inconclusive but i kinda see it as a draw. im tempted to raise the boost to 14.7 since i installed my stattama MBC, but dont wanna destroy my built 3TEP trans(has 1" chain and 300M input shaft plus some). after driving home i tried to retune and can run 20-21* on 13psi with a 10.5afr and barely any knock. all in all i was hoping to pull away from the LS1 but i guess im not there yet:( . btw, my brother raced a 05GTO a4 and apparently beat the driver of the gto but i dont recall if it was from a dig or roll.

cliff notes:
ran against 01 T/A with mild mods and he got the jump with a car length from a 50mph roll and stayed that way up to 125mph.
 


good run.


and your car should be faster than an xp intercooled set up.


to hear people say they smack around ls1's with bolt ons with there xp set up is funny.
 
I think you need more boost for your setup. I've heard of many stock L67s w/ Turbo kits running down LS1s better than that. Course more tuning and more boost will make all the difference in the world I think.

Nice setup overall man, wish I had something like that myself! S/C has bored me lately, I need a change...
 
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