Since I see there are some fellow Oregonians asking DEQ questions. I have one I need some advice on. I have an 82 810, with a l28eT swap. Went thru DEQ without cat and failed (High CO's), then put a cat on it. It failed again(still high CO's, not as bad tho). I recently had a "tune up" done by Jok at "Bill's Datsun" in Clackamas and am wondering if I'm now worse off... Any advice would be greatly appreciated.