Anyone know? I have a Perrin right now, but running it with the stock catback, it has exhaust leaks.

Thanks in advance

 

My Megan Racing testpipe also leaks with the stock cat back...

JT

 

I'm using the RS-R 3-inch downpipe with cat delete. The quality and fitment is A-1. If you're looking for just a testpipe, then try Helix or Ultimate Racing. They fit well and include a bung for O2 sensor.

 

Works has a test pipe, which I believe will work with the stock cat back

 

And the WORKS test pipe is resonated to keep the noise down a bit.

 

I've run the 3" version of this for over a year now. Awesome product and looks like they offer exactly what you need.

Ultimate Racing 2.5” Stainless Steel Test Pipe (Off-Road Use Only)
- 2.5” T-304 Stainless Steel Construction
- TIG Welded
- Direct Bolt-On Replacement for Catalytic Converter
- Guarantee No Engine Light

http://www.ultimate-racing.com/Produ...Downpipe.shtml

 

Sorry! Read the question wrong...

I have the HKS Downpipe with a hi-flow cat...in our cars, you would have to either run an entire pipe from the turboback to the exhaust, or, it's broken up into a downpipe and a small cat delete portion...

Brent

 

Interesting.. what makes the WORKS testpipe fit? Does it neck down? I would prefer it not resonated, since I'm going to hack it up anyway.

The reason I ask, is I'm thinking of going with the stock catback, and adding a cutout on my testpipe, but with my current testpipe, the stock catback leaks, so I put the B&B back on for now.

thanks

 

Really if you're going to be hacking it up anyway for the cutout you might be better off having one made for you by an exhaust shop. If you need to buy one though here is the best prices I've found on the Ultimate-Racing stuff because shipping from Canada from Ultimate-Racing themselves can get pricey, at least for me it was since I'm in Texas. http://z1auto.com/prodmore.asp?model...ust&prodid=481

 

- back from the dead -

I like the idea of using a cut out.....possibly and electronic one... like this:

http://cgi.ebay.com/ebaymotors/ws/eB...tem=7974997346

What kind of gains are to be had with stock downpipe - testpipe - stock exhaust VS stock downpipe - dump VS 3" downpipe - dump?

I dont want my EVO to be loud unless on a road course. Options?