I was wondering, in did a TII swap on my N/A as im sure a few of you are starting to realize.. It seems really restricted, most likely due to my stock N/A exhaust, which i believe to be 2 1/4? will i see noticable gains with a stock TII exhaust, which i believe is 2 1/2? (please correct me if im wrong) or should i spend the extra on an aftermarket 3" exhaust, what is the best bang for the buck here...

Please keep in mind i am on a budget, and if worse comes to worse, i am willing to stick with the restricted n/a exhaust i have now untill i can afford the best option (not the most expensive, high end, high performing option, but the best bang for my buck)

 

i got 3in turbo back for 300 shipped from ssautochrome.com I just did the same thing its worth it you can tell the difference power wise and sound

 

Let me just say that I dyno'd at 259 rwhp with the stock y-pipe and a 2.5" downpipe and cat delete pipe. I'm not saying that it is the most efficient exhaust nor am I suggesting you stick with the n/a exhaust for a long period of time. I am however saying that the major part of your restrictions are elsewhere. Give yourself time to open up the intake side. At least with the smaller exhaust you won't have any spiking issues that hit fuel cut. A larger less restrictive more efficient intercooler and a good aftermarket ecu yield the best gains untill you can spend some money on other things. Been around the block with this exhaust and don't plan to change it till I get a larger turbo and subsequently larger wastegate.
Keeping the intake air as cool as possible will help egt's even with a restrictive exhaust. If anything pick up a used stock tII exhaust and delete the cats. That will be all the flow you need with the stock turbo and you can make some good numbers(relative to the stock turbo). When you decide to upgrade the turbo, then you can use a good flowing exhaust to its potential.

 

there is no difference between an n/a and T2 cat back that i have seen and no, they are not really that restrictive, i run the stock catback on my T2 pushing about 300whp and there was little power difference vs the 3" free flowing cat back.

if you are running the cat that you got with it, it likely is where your problem is.

 

Well I am running a custom built intake and a trust fmic. The only other intake flowing I could think of is doing the fd uim. As far as the 3" exhaust and spiking I do have a fcd. Maybe I will try deletig the cat with a yet piipe before I spend money on exhaust ad go from there