t3/4 exhaust

[j_woody]

would a 2.5" o2 eliminator turboback exhaust w/ test pipe be large enough for a t3/4 50 trim, .63, stage 3 wheel, turbo?

i already have a 2.5" test pipe and catback and would like to keep them if possible. Any suggestions or comments would be helpful

and yes i searched.

 

[DSMJim]

it would be ok, however you would benefit more from a full 3" exhaust system.

 

[j_woody]

how much more? I am not looking for a 10 sec street car. I am more interested in a decently quick, daily driver that does not sound like a race car running just headers.

I guess my question is will a dp and test pipe add much more noise to the cat back I already have and how much more noise will come with a 3 inch exhaust system?

and any horsepower gains from 2.5-3"

 

[kpt4321]

You can't pose a question like this. I could say that the stock exhaust is big enough for a turbo of that size and be correct, and I could also say that a 3.5 inch exhaust is still not big enough for a turbo that big, and still be correct.

You would see a benefit from going to a 3 inch. How much remains to be seen.

You can do a 3 inch exhaust that isn't any louder than a 2.5 inch without really increasing the restriction of the exhaust.

I think a 50-trim is a bit big for a "decent quick" daily driver. I would consider my car "decently quick," and it has a 14b. And, I can think of several 16g equipped cars that are "decently quicker....."


.....Kyle T.
93 TSi AWD "TURBO4"
14b - 12.8 @ 108

 

[bigfoot]

That turbo can make alot of power with good tuning. I'd sell the test pipe and catback and put the money towards a full 3". You want a streetable car, the 3" will give you both better spool and power. My exhaust builder is going to make me three center sections. A cat for the DEQ test. Test pipe for the track and a resonator for the street. In addition to the resonator in back. Should be plenty quiet. You will love the deep sound too. No Honda fart sounds.