1970z28

would the 3500 studder effect the opti in any way. car is acting crazy after running it aganist the studder box. car will start and run for a minute then dies, no fire to the plugs. let it set for a few minutes starts up, when you turn the engine off it will not start back up until it sit for a few minutes. ran this set up minus the 2 step last year no problems, now i hooked it up thru the trans brake to leave at 3500. can test it at the shop it will go aganist the box one time and act crazy thru the rpms and die. will not start until you let it set. going to check the ign. buy the msd instructions to eliminate the box.

1970z28

now i changed over to stock ign. no msd ign. now still the same. start engine runs fine for 3-5 minutes, acts like it tries to catch its breath, dies. will not start back up. turns over fine. i dont have a lap top to check it while it is running. wanted to go to the superchevyshow next weekend? could it be the opti craping out. tried a new coil no luck. anybody please help. can let it set for 1/2 hour and starts up for 3-5 minutes the dies, tried to get a module but the auto parts didnt have one in stock. 75.00 for that thing jeez .