java09

seems like you just needed to clear the ecu and now you just need to fix your FIC tune! seems like your good to go..

my afr's at WOT are 11.5-12.3.. so kinda a semi aggresive tune.

08superwhite

and yes the 18s or 3 lines you see when decellerating (off throttle) are normal

aen

resetting your ecu sets your tc into a "diagnostic" mode, it enables your ecu to read everything so that it can make adjustments to the fuel mixture and whatnot after about 50-60 miles if it senses anything wrong it throws up a cel, and corrects everything using fuel trims. which is what you're experiancing. thats why whenveer you reset your ecu, your car seems a bit sluggish.

nlataille18

i see. now i have a CEL right and i went in through the OBD II. I used the specific vehicle option instead of global. It said i had not diagnostic codes or pending codes. i i reset the light and it was gone for like 5 miles. it came back so i rechecked it and still no code, just a light. WTF is up with that.

A guy there, he works on quit a few turbo cars told me it might be because the air that i am pulling in is to much for the MAF sensor and trips a light, but isn;t continuous enough to generate a code.

also a little up date on my AFR's. they have seemed to have leveled out a bit during driving, but every now and then at a idle it tends to idle really low and the mixture gets really lean. Sometimes bad enough that it just stalls. This is when the car is just idling, not after a period of boost and the blow off valve goes off.

The guy also said the engine at idle will vary between running lean and rich to better catalyze the exhaust buy charging the cat. with rich fuel and then burning it out by going lean, but he doesn't seem to know why it would go lean enough to stall.

I know some of you are going to say vacuum leak, but i do not have one. I put a vacuum pump/gauge on my car and it held firm so i can rule that out.

I also have 2 step colder plugs installed. I was also thinking that because this was a used kit that maybe the injectors are dirty. just a thought, and would it be bad to put injector cleaner in my gas tank?

aen

our car is new. the maf system is one of the most finicky you can come by.

if it picks up any mistake it corrects it and if it corrects it enough times it puts up a code

nlataille18

so maybe i just have to wait it out and see if it throws one, or are you trying to say my CEL is on for another reason, maybe it just likes glowing that annoying yellow color!!

bennyboopy

It also couldn't hurt to recheck all you intake piping connections. Use some soapy water in a windex bottle while the car is on.

nlataille18

maybe it has something to do with the fact that i totally forgot to put a vacum line to my FIC?

preston2580

im having sorta the same problems but my afr is at 10 when i am cruising and we have tuned it twice, so idk. the tuner is going to reset the ecu and what not but i was jus wondering if anyone had any ideas, im using the aem fic