None, my downpipe dumps into the fender where a cold air kit would go.

 

my down pipe is 5" off the turbo, about 18" it goes into a 4" and is run through the a-arm. I have coilover conversion, and tubular kmember/a-arms so this gives me alot more room to play with. At about where the cats are located (under the pass floor pan) is a magnaflow 4" race muffler and then another 1" section of straight pipe into a turn down.

 

wow that must be LOUD, sounds bad *** probably though

 

Is that Dynomax a 4" oval pipe muffler also?

That's the exhaust I have on my car and it isn't nearly enough. I'm losing about more than 1k RPM and ~200HP because the car falls right on its face in the upper RPMS. I'll be going with a 4" oval setup.

 

No, it transisitions back to regular 4" after it goes underneath the low point of the car.

 

Got it.

 

i will be using a slp loud mouth. i used to have 3" true duals but i had alot of clearance issues where i live and i was often breaking mounting brackets from hitting. sadly i will be bolting on a cat for inspection day.

 

I'm going to try and stuff the random tech 4" oval cat where the stock ones go. I need to check the dimensions to make sure it will fit!

 

where did u buy the ovalized piping?

 

Burns stainless. I think Dr.Gas sells it as well.

 

This setup worked great for me on the stock heads/cam and with the log manifold setup, but once I did a true header setup by RealQuick and heads/cam it was too loud. I just added a dynomax ultraflow after the bullet before the axle and it was quiet again, I prefer QUIET cars also.

 

I plan on bolting in a off road pipe for the other 364 days a year though. I am worried about how loud the loudmouth is going to sound, but at the same time I ran open headers/y-pipe for a while.