XI aftermarket catalytic converters??

Originally Posted by SamDoe1

Just out of curiousity, what's the point of this other than to be green? Why didn't you just keep the stock cats? Are there benefits of having headers and cats vs the stock ones?

Removing the stock cats and replacing them with headers on 325/330 yields ~15-20hp and a glorious exhaust note. By adding these sport cats i've maybe lost 3 hp, ie not noticeable at all, the car sets readiness/no CEL and you loose the funky "no cats" smell. I have also messed with o2 sims and did not get good results. In terms of bang for the buck, i highly recommended it.

^ Cool! How much and where did you get them? Apologize if you already wrote this in the thread.

Originally Posted by SamDoe1

^ Cool! How much and where did you get them? Apologize if you already wrote this in the thread.

headers are $100 ebay knock-offs, cats are generic, you can get them off ebay/amazon