i agree with what the others said about reaching 400 with N/A, that would be nearly impossible without boost. but reaching 350 will be a task to work at as well, but maybe you should look into what exhausts work best with F/I just in case the future holds anything such as boost for you. when you boost you will already have the exhaust for it. good luck

 

Apexi Ws2, TurboXs, Stillen Y-pipe back are nice systems for the n/a, but like some others have said, 400hp is almost near impossible w/ n/a. F/I will be the easiest route, and I would pick one designed for that. Don't waste money on an exhaust that you probably will get rid of later on. That narrows down your choices for what you're looking for, as far as your future plans is concerned. gl.

 

So Greddy TT exhaust XD haha?

 

try to get to 300whp first if you can. even then the cost is goin to be roughly around the same as FI

 

even if u want 300whp. ull be looking at thousands.

if u look at it. turbo is much cheaper than n/a. (figuring u want around 350whp).

just take out a 7k loan. pay a hundred extra a month or somethin. thats what im doin. bye

 

To the original poster: you are confused. You need to search (and lurk) more, and post less.

You need to learn what is possible and what is not possible. You need to learn the cost of 300WHP N/A and the cost of 400WHP F/I. You need to learn that there is no such thing as 350whp N/A on this car, not even if you spend $10k on a N/A engine build.

I am going to lock this thread until you straighten out your goals and fix your expectations so that they are reasonable. Until then, you are just stabbing around in the dark looking for that magic exhaust to give you massive HP which you will soon realize does not exist.