I have a 89 f150 302...9lbs pulley,intercooled,headers,full dual exhaust,msd ignition,upper and lower intake,61mm throttle bodie, mass air conversion,, now my problem is that the truck at idle is at 17A/F ratio which is lean .. how would i correct this problem ... do i need to get a custom tune.. or a chip burnt for me ....does anyone have any experience with this .... and should i just dump some more fuel into the engine...

 

wow thats lean! mine idles at 14.7-14.9 sometimes bounces up to 15.1 at highest.

have you done any kind of tuning to it at all? id tow it to a tuner so they can get that those a/f's right.

 

thats just it ..i live in ontario and the closest to me is like a 10 hour tow behind another truck... thats my dillema

 

How can you do this, or what is available to do this? Do you have a tuner with adjustability or??

 

right now i have an adjustable fuel pressure regulator ,, set at 36lbs at idle with no vaccum

 

well i definitely wouldnt drive it like that, towing it to someone who can tune it may be ur only option even if it is far.

 

well right now i have a call into anderson ford and they think i could acheive what i want with one of the pms system.. something like a piggy back to the cpu to tune the engine.

 

i dont trust ford dealers :-(

 

ya he wants like 1000 bucks american...i don't know if i need it that bad .. but i added more fuel and it seems to want to start idling.. right now im at 42 lbs of fuel

 

what kind of supercharger are you running? a KB?


anderson ford is way more than just the average ford dealer.

talk to Todd there he hooked me up a couple times and they can robably solve your delima

 

i have a powerdyne blower on there...9psi