today i have mounted the catalist back on i must say the car is pulling much better in low revs

maybe it s not a bad thing after all

for track use you can better loose the cat because you will be running in high revs mainly so better flow

but on hairpins a cat is ok more torque on low revs

regards

andre

 

I have to say with my short racing cat I didn't really feel a difference between it being in the exhaust or out.... The standard one is different, when I had mine taken out of the standard system with a different downpipe, it increased pull in lower revs....
Usually the car should pull more in lower revs without a cat....

 

claudius i am running 2 bar boost

no just kidding

i have it standard because i have the car sold

regards

andre

 

Claudius,

If you have fitted my supersprint cat pip it's because my evo was better with the standard cat!!!