I have a missing popping problem at higher boost levels approx. around 14-17pounds of boost. The problem became more noticable after installation of grainger valve, turbo would build boost very quickly then pop out the exhaust. Also I am able to rev it freely in neutral but when building boost at the line car misses and sputters then takes off. thanks.......
87 Gn Hardtop, 120,000 miles
Heads never been off (low mileage stock cam) stock turbo
Need valvesprings (winter project...)
307 walbro hotwired, greenstripes, thrasher chip
accufab fpr, I.C. neck mod, BG,neck/3"dp,test pipe,hooker
2 1/2 pipes with magnaflow shorty race muffs, TCS 9" 2800/shift kit... all frame/chassis braces,
(putting on 50#msd, 340 pump, John Craig PT-52 and JL chips very shortly :rock: )
87 Gn Hardtop, 120,000 miles
Heads never been off (low mileage stock cam) stock turbo
Need valvesprings (winter project...)
307 walbro hotwired, greenstripes, thrasher chip
accufab fpr, I.C. neck mod, BG,neck/3"dp,test pipe,hooker
2 1/2 pipes with magnaflow shorty race muffs, TCS 9" 2800/shift kit... all frame/chassis braces,
(putting on 50#msd, 340 pump, John Craig PT-52 and JL chips very shortly :rock: )
