Tuning issue

Non-vehicle specific forum for tuning all ford ecu's 1994-2004, including the 1994-1995 Mustang, 93-98 Mark VIII, 99+ F-150, 99-04 Mustang, 03-04 Cobra, 99-04 Lightning and Harley Davidson F-150


Tuning issue

Unread postby Cmoses » Sun Apr 14, 2019 6:52 pm

I will give a short info on my build. I have a 95 mustang 5.0 just put a borgwarner s366 on it. I have a e303 cam in it was in from previous owner, 42lb injectors ford lightning maf calibrated to 42lb injectors. Has a 255 fuel pump with adjustable fpr. Just installed a mspnp ECU park that gets me is car is set a 12* btdc ran great there then did all this work dam thing dont want to run. Has basic tune to get running and i advance it or retard it gets little better but idles great go drive it falls on its face so tweak the fuel a/f and ignition helps little bit but I can feel it not right. Any info I would love the help.
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Name: Chris Moses
Vehicle Information: 95 mustang 5.0 with ms pnp

Re: Tuning issue

Unread postby decipha » Sun Apr 14, 2019 8:00 pm

sounds like you need to verify your timing is functioning correctly first.

toss a timing light on it and make sure u get what u command, command 10 and 30 and verify it

make sure your wideband is reading correctly and that its near stoich while cruising
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