SCT problem with 95 GT
My friend had his car tuned with an SCT chip. It s a 95 5.0l AODE , 306 forged with J.E. piston,Vortech SQ-Trim @10psi , GT40 head , Explorer intake , crane 2031, 30lbs , throttle body 75mm and mafi 75mm Pro-m.
The car pull very strong, AFR is good in all range in WOT, the problem occure in idle or on a highway at cruise, in both situation the AFR still at 14.7 average and suddenly goes to 17:1 or higher for a second and it fall to 11:1 or lower and if we are at idle the engine shut down and it hard to restart, and if we are on a highway , after the up and down glitch the engine make a pop in the exhaust , sometime a big pop ,sometime it just jerk and return to 14.7 and run great.
Thanks for your advice