I am using a GSR cat w/ my 2 1/4" piping on my H22...the cat bottles up pretty small....I can run w/o out a cat until late 2005 if I want...I was thinking of having a test pipe flanged and then pick up a high flow cat when I catch a good deal somewhere...Do you think I am losing a lot w/ the GSR car? the motor is stock.

 

i would think u would be losing a little with the smaller cat.

can u not find an h22 cat anywhere?
or just do what u said and have a test pipe flanged. im thinking about doing this. (and then just mounting the cat cover over the pipe.) see who i can fool. ahahhaha..

 

i take it you're in ca? i'm running no cat, but in texas.

 

nah east coast schemes with cali dreams!!!

I have a visual inspection in 2005

 

are you using the 17in GSR cat w/ two o2 bungs

 

o2bung is welded closed it is the odb-2 gsr cat