1st you will need the cat that is a federal mandate and that should bring smog levals down a bit to what level not sure.Cool_Mr_Steve said:Ok, I am running without a cat and by EGR solenoid is bad. My AFPR was set to about 41psi (vacuum line disconnected) and I dumped a quart of denatured alcohol into my tank with about a third of a tank of gas. The limit for my hydrocarbons (which I understand to be unburnt fuel) at idle is 220 and I scored 336, which sucks. At cruising speeds I passed, but I need some help on how I can lower my idle emissions. My Idle speed was set to 750 and I was told that if I back out the BISS a bit to raise my idle to 1000-1050 (limit is 1100) it would add more air than fuel to the mix, thereby lowering my HC's. Could I add more alcohol? Should I lean out my idle with my SAFC II (on stock injectors, for emissions purposes...)? What about my AFPR? HELP!
I would fix the EGR too