CrazyModGSR

I went through emissions the other day with my turbo GSR. One of the numbers failed and the guy said that if I lean it out a little bit, that number should drop under the legal limit and pass no problem. When I bough the car, the seller informed me he had it set running a little on the rich side anyway to be safe. Anyway, I am wondering how easy it is to use my Apexi S-AFC (already installed in car) to "lean it out" a bit. I don't want to go crazy, where I am putting the engine in danger, but i've never used the air fuel controller before and don't even know where to begin or how to use it to change the air/fuel mixture to be a little more lean. Can anyone help me out with this?
Thanks much

0mtber

iTrader: (2)

Go to google.com and search for the apexi website which will have the manual on using your afc.

crispydee

Yeah as above really. I dont now how they do your emissions over there but here in the uk its just at idle so i would just take 3-5% of fuel out at 1000 rpm or whatever % it takes to get it to pass the test. If i were you i would write down the high and low throttle settings before you start so if you do get in a mess you know what they were and then just put them back to what they were after the test.

CrazyModGSR

what do you think is the most I should lean it out without danger of killing the engine? ie: If I lean it out 3-5% and still doesn't pass can I lean it out another 3-5% and so on, when should I stop? lastly, what does anyone think would be best for testing emissions regarding the octane. normally I run 93, but would 87 or 89 burn cleaner or easier?