PT Turbo lite exhaust size. 2.5" or 3"?

[2004PlatinumTurbo]

I have a 2004 turbo lite and im looking to do exhaust turbo back. im looking to be making 240-260 whp in the end and was wondering what size piping to do. Either 2.5 madrel bent turbo back or 3 madrel bent turbo back. would 2.5 be enough because there is a good price savings on doing so

[NitroPT]

If it is not a track only vehicle 1/4 WOT operation then I recommend stay with a maximum of 2.5 i.d. exhaust pipe. Use mandrel bend when ever possible. Exhaust pipe benders will reduce the internal pipe size. Keep exhaust pipe with as little bends or turns as each reduces the flow.

[2004PlatinumTurbo]

If i go 2.5 do I need to replace that 90 degree elbow coming off the turbo?

[Busted_PT]

Nitro is correct. But you can get those numbers with stock pipes. Just in case the budget is a consideration. Intune and stage 1 and your almost there.

[2004PlatinumTurbo]

I was just stating that going 2.5" ill save about $200 which i can use towards a intune and a stage 1. I just want my car to sound better and the slight possibility of spooling a little quicker im gonna do 2.5 turbo back with highflow cat and borla muffler

[NitroPT]

Opinion based and observation via inspection:
You may consider using an aftermarket H02/02 housing along with a down pipe going from 3" to 2.5?

This one is what I have and was pretty good quality. It did not come with the extra brace.
https://www.modernperformance.com/pr...ruiser_exhaust

Needwings is more expensive pretty much the same quality and should have the extra brace?

I also have an inexpensive E-Bay stainless down pipe of as good a quality as I have seen?

Neither may not do much if you do not do the exhaust manifold mod though?

[2004PlatinumTurbo]

So you are saying is run a 3 inch O2 and a 2.5 inch downpipe?

[NitroPT]

Originally Posted by 2004PlatinumTurbo

So you are saying is run a 3 inch O2 and a 2.5 inch downpipe?

sorry I may have been a bit confusing?

Down pipe 3" to 2/5

3"H02/02 housesing

[WolfmanG]

that's the set up i have on my turbo-lite. but i just installed a magnaflow cat-back too.

this was when i first put it on way before my exhaust

[PT8corn]

Stock turbo exhaust pipe is 2" id pipe. I went with 3" o2, 3" downpipe with 3"CAT, 2.5" CAT back. All stuff off ebay 5+ years ago.