I HAVE A 383 WITH TPI A HAD A CHIP MADE BY A PLACE AND PUT IN 30LB INJ.,A 52 MM BBK TB. A 278 DUR. COMP ROLLER CAM . IT RUNS WELL TILL IT HITS 160 TEMP THEN IT STARTS RUNNING BAD AND GOS FROM REAL RICH TO LEAN . THE TIMMING IS RIGHT WHEN COLD I KNOW BUT DONT KONW WHAT IS CHANGING WHEN IT GOS TO HOT LOOP. MY FUEL PRESS. IS AT 40 PSI THATS WHER IT RUNS THE BEST COLD. I PUT A NEW O2 ON IT AND A AIR IDEL MOTOR TO DAY BUT THAT DID NOTHING STILL RUNS BAD WHEN HOT AND WILL DIE AT IDLE.

 

Drop the caps . Anyhow , you throwing any codes? I would be talking to the guy who made the chip. It's pretty hard to get it rigth the first time when makeing them.

 

AFTER ALL THE NEW PARTS ,O2, AIR IDLE, TEMP SEN, AND TPS, THE NEW TPS I GOT WAS BAD AND A NOTHER NEW ONE DID THE TRICK. THANKS FOR ALL THE HELP.