Okay, I’m a bit confused. After I got my engine swap done, I had to hook it up to my stock exhaust. This HAS to go.

Now I’m looking at the RS*R EXMAG exhaust as a replacement. This fits my needs perfectly, but there is a problem.

I’m running a JDM ITR header which has a 2.5" collector. The RS*R pipe is 2.35" (60mm). Id like to run a free flow cat or test pipe as well. How do I go about compensating for this size difference? Will I need to get a test pipe that tapers from 2.5" to 2.35? What’s the deal here? This is all very confusing to me.

Thanks in advance,
Joe

 

why dont you just get a 2.5" exhaust, like a T1R or something from kteller

 

because I dont want something thats loud. The RS*R is the best for this, given its flow characteristics.

 

anyone else?