Toe Knee
New Member
My '00 GSR has thrown a P0420 code & CEL. I'm told it's my cat that needs replacing. I have a 4-2-1 DC Sports header (ahc6511) on it. I've read that going to 2.25" exhaust will free up some power. Should I go with a 2.25" catalytic converter? When I change the cat, I will be getting a Greddy Evo2 2.25" cat-back also. I live in California, and have only been able to find 2" cats that are "legal" in CA. I need to pass SMOG, but think as long as I have a cat on and can pass the sniffer test, a CARB is not required. My stock cat is 17.5" in length with one O2 sensor hole. I want a direct fit that I can install myself or have flanges welded on to a universal.
I am not sure what my best options are:
go w/ 2" Magnaflow Cat(46550) & then a Greddy Evo2 2.25" cat-back or...
get a Type R cat(which I think is 2.25") Magnaflow 46551 or...
get a universal 2.25" & have flanges welded on ( all universals are shorter than 17.5"...not sure how to make up for the length or...
something else I haven't though of...I'm a noob, so I'm sure there is! I'd really appreciate any help with this. I've researched and read the forums, but seam to just get more confused...please straight me out! TYVM
I am not sure what my best options are:
go w/ 2" Magnaflow Cat(46550) & then a Greddy Evo2 2.25" cat-back or...
get a Type R cat(which I think is 2.25") Magnaflow 46551 or...
get a universal 2.25" & have flanges welded on ( all universals are shorter than 17.5"...not sure how to make up for the length or...
something else I haven't though of...I'm a noob, so I'm sure there is! I'd really appreciate any help with this. I've researched and read the forums, but seam to just get more confused...please straight me out! TYVM