I was thinking of getting a straight single 3 inch piping exhaust with an Apex N1 muffler with 4 inch tip. Will I gain power with wider piping and converting to a single exhaust? Here is my myspace link so you can see a pic of the muffler:

http://profile.myspace.com/index.cfm?fusea...riendid=5797861

Thanks ya'll!

 

Can't answer your specific question as to going to 3" piping, but I believe it is universally agreed that our stock exhausts are so efficient there's not much power gained in upgrades. What you do gain is weight reduction which enhances performance.

Don't expect a big jump in hp just because you replace the exhaust without any other upgrades to the power plant.

Hope that helps.
-golfpro

 

What goldpro said is relitivly true. Just by changing the system to a single is not going to yield to many gains (probably 5-7hp). Now if you added a test pipe with that single exhaust you'll see a lot more gains (10-15hp).

 

ok, yah I would be getting a test pipe or high flow cat as well, which I forgot to mention. I just dont wanna lose power if I go with this set up

 

Also, are there any special brands of test pipes I should get? I heard that stainless steel lasts longer, so should I get a stainless steel test pipe w/ resonator? Are all test pipes stainless steel?

 

I believe all the testpipes currently being sold for the S2000 are made of stainless steel. My personal favorite is the Megan since it has the built-in resonator and still costs under $100 shipped. Don't bother with a high-flow cat though, we have one of those stock.

 

what it be a bad idea to buy a non-name brand SS test pipe for my S2K? If so, why?

 

A pipe is a pipe. Our testpipes are a bit more complicated than a regular testpipe due to the bend and cup flange (not sure of the official name for it) on the header side, but aslong as it has those 2 things you are fine.

 

Is your car NA or FI? A 3" single would be nice for a FI car, but for NA that is definitely overkill and may actually hurt performance. Some back pressure is needed with NA cars.

 

how would I get back pressure? My car is mostly stock. Also, do all test pipes have built in resonators? What do resonators do and how do they help?