3" test pipe

[eastwick897]

anyone using the 3" testpipe that on eurocodetuning website? If so any feed back you could give me on it?

[Quattro]

umm, a friend of mine is running an atp 3"tp, I am sure he will chime in

[jimmya4]

i have vmr's 2.5 but have yet to install it. i heard 3 inch gives less power because it doesnt have the right amound of backpressure but thats what i have heard so it could mean anything. anyone know the pro's and con's of the 2.5 and 3 inchers??? i assume 3 will give a deeper louder sound too

[Six Speed Turbo]

I have the E-Code Tuning TP and I love it. The car responded well to it, good gains down low and better flow up top.

[supamannn99]

here's a good resource:

http://www.audizine.com/forum/showthread.php?t=185926

[Geoffafa]

a friend has a custom 3 inch tp/dp combo.. it doesnt really do much, just helps him out a little bit with the flow on nitrous

[eastwick897]

I thought the less restriction a turbo car had from the turbo the better it would be. I heard naturally aspirated cars should have back pressure.

[Slo.Mo.Shun.]

Here you go, custom made Vband DP that attaches to a custom 3" Ecode vband TP.

[fusionx]

3" pipes can lead to turbo problems down the road plus you don't get as much power from a 3" than a 2.5 inch. id go with the 2.5 man..

[gaede]

I'm running the ATP 3incher and now that i've had t a while, i don't see the point... I've tried to think of how it would make sense to hook up a 3" tp tube directly to a 2.5" exhaust, it never added up. Honestly i think there could be, and probably are, some backpressure and/or airflow issues, but it's not noticeable at all. If i ever get around to it i'll probably order VMR's 2.5er but until then, i haven't noticed any problems.

[fusionx]

you loose a lot of the low end torque getting the 3.0 instead of the 2.5 which is what the test pipes mostly about :-/ and HP of course :D

[gaede]

how much is "a lot"? numbers/tests/proof?

i know you're probably right, but i'm just curious...

[fusionx]

don't have exact numbers, but the guy that does all the work on my car and many of my friends cars / peoples cars on the forum told me this. Id defiantly bet good money on his word lol You'll end up paying a lot more for a 3.0 test pipe than the VMR one anyways.

[supamannn99]

i still need to find a way to delete the CEL from a testpipe. cant do programming becuse i have GIAC and they dont have a testpipe file. i've been looking into defoulers but i dont know how to set it up....

anyone?

[fusionx]

Id switch to REVO man. REVO has a stage 2 software that eliminates the CEL and adjusts your engine to provide more fuel so you dont get any fuel cuts. I think to go straight to stage 2 is $550 for REVO. I have REVO stage 2 on my a3 and i love it.

[Slo.Mo.Shun.]

i still need to find a way to delete the CEL from a testpipe. cant do programming becuse i have GIAC and they dont have a testpipe file. i've been looking into defoulers but i dont know how to set it up....

anyone?

Go to an exhaust shop and ask them to space out the o2 sensor and that should do it.

[Mr.Audi]

turbo car do not like back pressure... period, point blank. That is why guys with high hp cars are all running 3 + inch exhausts and downpipes. N/a engine NEED back pressure, turbo cars do not.

[fusionx]

Go to an exhaust shop and ask them to space out the o2 sensor and that should do it.

hes still gonna get fuel cuts if he doesn't have stage 2 :-/

[supamannn99]

:( its so expensive to get revo :(

[fusionx]

its well worth it dude :-/

[Sal_B7]

i still need to find a way to delete the CEL from a testpipe. cant do programming becuse i have GIAC and they dont have a testpipe file. i've been looking into defoulers but i dont know how to set it up....

anyone?

I have defoulers on mine and no CEL, i know it wont help you out with fuel but it will help you with the CEL. I dont have any pics, and im not anywhere near my car to take pics so i cant really help you out. I just used two defoulers.

[baldy]

So what is the final verdict.. 2.5" testpipe will give more torque over the 3"? 3" is over-kill? 2.5" is adequate? Have stage 2 unitronic with the CEL delete, so thats not a concern, but when I go to the dealer, will a 02 spacer and the stock tune give me a CEL or not is the question...

Thanks in advance

[Trile]

i think 3" inch test pipe is best when coupled with a 3"inch downpipe... get a custom downpipe made, I probably will soon ;)