I have an '11 convertible that needs all new exhaust system, car is from Mass. I am looking at replacing the oem exhaust with either a Walker performance manifold w/ cat ($400) or go with a performance header w/ cat delete($200). I plan on getting new oem O2 vano sensors, will they still "throw" a code without the cat? The rest of exhaust will be replaced also....straight 2" pipe to performance turbo muffler. Advice???
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Walker

 

Any vehicle is going to throw a light if the primary cat is missing. If you don't want to deal with the CEL, get the header with the cat, and redo the rest of the exhaust.

 

Thanks...I went with the Walker set up.

 

how did it fit? any change in exhaust note or performance?