Originally Posted by darrinps

I will either purchase an Invidia Q300 or go custom this weekend...one or the other.

I know what I will be getting with the Invidia, but I'd like some feedback on the custom idea.

What I am planning to do if I go that route is get all new piping in either 2.25" or 2.5" from the cat all the way to the stock muffler leaving it intact and reusing my stock resonators along with adding a crossover before them.

It's basically the exact same setup many of the aftermarket systems use except that I will be keeping my stock muffler (and viewing a cut open view of it, I don't think it's all that restrictive) and resonators instead of the ones they supply (at GREATLY inflated prices in most cases I feel).

I can get this done for about $250 at a good muffler shop close to me.

What are your thoughts on sound (wanting it to stay close to stock...a bit louder is fine) and performance.

My guess is the sound will be very similar but a tad bit louder and the performance will be on par with most of the aftermarket setups...expecting around 10HP increase.