I was just wondering how many people in cali are running their evo with a test pipe.. As some of you know.. I took out my test pipe because it was way to loud.. Is ur evo super loud with the test pipe also.. One more thing.. is my car running poorly now.. since i had a 3inch downpipe with a 2.5 cat.. It kills my low end torque and it doesn't even flow much better.. So should i take out my 3inch Dp.. and put int he stock one until i change out my cat.. Maybe replace that with my 3inch test pipe or high flow cat??

 

You probably restricted flow since you have a large downpipe and cat-back with a smaller cat bridging the two = makes no sense at all .......

You need to either ...

1. Swap your stock cat back to your 3" test pipe, or upgrade your cat to a bigger, 3" race cat.

2. Or, keep your stock cat and trade your 3" dp for a 2.5" HKS dp.

DON'T put your stock dp back on ... it's only 2"= restriction.

# 1 makes the most sense ... it's very simple Wayne just get er done.

 

Did you have to remove the lower tie bar with HKS downpipe?

 

does anyone make a hi flo cat for our car??

 

Shaun, which one do you want?

Blitz, Greddy, HKS or Cusco?

They're in R&D but we can get a prototype.

Want one?

PM me

 

I believe Buschurracing has a high flow replacement made for a 3in turboback.