Does anyone have a testpipe on their na? If so, was the hp gains noticeable? And also if i had the tespipe put on, would a new cat back exhaust system bolt right up to the testpipes without any modifications?

I might just put the testpipes on first with some mufflers....then get a cat back system a little later on when i get some money.

sounds good...but usually people put the cat-back on first. but

yes if you have test-pipes made specifically for your car, a cat-back will bolt right up to them.

i got my testpipes today for my na, i'll take some pics and find the link for where i got them. i'm also using headers but i don't have them on yet so i can't say how noticable it will be. it should also bolt right to an existing system.

http://image16.webshots.com/16/8/66/26/221286626woYdcX_ph.jpg
heres the test pipes i got, they are really high quality pipes.

heres a link for them http://tsperformance.net/tsp2mabestst1.html

top speed??? there is a performance shop in chicago called Top Speed. its one of the more popular ones in this area.

those were the exact ones i was going to get! Im glade to hear and see that they look good, they look better than their picture shows.

they are very good quality, i make my own exhaust for the cars i build and i'm impressed with the quality.