Hey I need some help . i have a 1987 mustang gt converted to mass air with a gt40 iron head long block, e303 and gt40 intake, 24# squirters cl 73 mass air meter with sample tube for 24#.I just added a powerdyne supercharger bd11a with a 11lb pulley. The car also has a msd 6al ignition and jacobs ultra coil with a gss 340 255 lph brand new fuel pump. However when cruising
the car will not run past 3000rpm . The symptoms are its dead at 3000 rpm and 5 pounds of boost showing on the guage no more gain in rpm even if the pedal goes to the floor and she is trying to go but can't and sputters and bucks sounds like alot of misfiring cylinders dit dit dit dit sound from under the hood during this 3000 rpm problem but the car runs smooth as can be below 3000rpm I have no clue whats going on I just had the fuel pump replaced yesterday. The fmu is 10 :1 and is hooked up . PLease help this is frustrating I Should have enough fuel and timing is set at 6 degrees any suggestions on getting rid of the fmu and what size injectors i need will help .
the car will not run past 3000rpm . The symptoms are its dead at 3000 rpm and 5 pounds of boost showing on the guage no more gain in rpm even if the pedal goes to the floor and she is trying to go but can't and sputters and bucks sounds like alot of misfiring cylinders dit dit dit dit sound from under the hood during this 3000 rpm problem but the car runs smooth as can be below 3000rpm I have no clue whats going on I just had the fuel pump replaced yesterday. The fmu is 10 :1 and is hooked up . PLease help this is frustrating I Should have enough fuel and timing is set at 6 degrees any suggestions on getting rid of the fmu and what size injectors i need will help .