Greg761

I just recently installed a s-afc controller on my S5 NA. I followed the instructions from both the Apexi and the how-to on 1300.com. Since the install my car has been bogging and dieing at idel with +0 correction all across the powerband and the check engine light is also on. I did a search and couldnt really find a thread with anyone having the same problem. So if someone could point me in some sort of direction on fixing this problem i would like that alot. Thanks

ilike2eatricers

Did you set the engine type for 4 cylinder with the arrow pointing up and to the right? Did you input the right sensor type?

Greg761

yeah i set it to 4 cylinder with the arrow pointing up and to the right and flap type sensor with 06 in 06 out

VietFC

did you cut and splice your connections? they should all be spliced except the air flow meter wire. and it's +0 correction across the powerband probably because you didn't set any of thm. Did you set up the tach wire correctly? are all the sensor giving you readings when you go to the sensor check window? you need to make sure all these are working before you start your car... you can potentially damage your motor.

Greg761

How do i know if the tach wire is set correctly?

VietFC

you said the car is running correct? do you get an RPM on the SAFC?
it should tell you what RPM your car is currently running... should be the most blatantly simple task to find.

Greg761

yeah rpms show on safc so im guessing the tach wire is installed correctly

VietFC

yes. how about the sensor check window... do you get readings from all the ones you are supposed to? and about the correction... have you even set anything to expect a correction other than +0?

Greg761

How many of the sensors are suppose to be reading? And yes i have set it to + and - setting. + settings make the car run worse and - makes it run about the same

ilike2eatricers

Pull the codes. That would have been the first thing I did since the CEL came on.

VietFC

ah, i missed the cel part... if the cel came on after you did it.. you may have has something wrong with your wiring, or possibly even wiggled some wires to much causing some bad cold solder points... liek ilik2eatricers said... pull the codes.

Greg761

good idea...but its not really driveable so i couldnt take it anywhere and i dont know anyone with a code scanner. I guess i could always tow it if it comes down to it

Greg761

Thanks guys I'll double check some of my wiring, in the morning.

VietFC

you don't need a code scanner to pull the codes... you can use the light method.

Greg761

really? you got a link or a how-to on how to pull codes using this light method

VietFC

it's called searching
https://www.rx7club.com/showthread.p...k+engine+light

Greg761

im aware of searching.... since ive never heard of the method before i didnt really know what to seach for. thanks alot i appreciate it