Problem: bogging and backfiring (intake) typically 1800 - 2000 RPM. Starts to bog and run rough, backfires, runs better. Generally lacking in power. Scan indicates lots of knock (1800+ in 20 minutes)
Checked or replaced firing order, CTS, TPS, MAP, EGR, distributor/cap/rotor, plugs, timing (0 with EST disconnected), fuel pressure (13), vacuum static (18) and leak tested using propane, O2 sensor, knock sensor, and compression (145-160)
Recent changes that somehow caused the problems: Edelbrock heads/intake, shorty headers, new distributor, CAI, new coil , new fuel pump, 65 lb injectors (OEM 55's same problem)
Running a log using TunerPro indicates that BLM is consistently 107-117 indicating that it thinks the engine is running rich. No CEL and no error codes logged. If it helps, the log is available.
If I disconnect EGR, Less backfire (but still there) and no hesitation off idle.
Checked or replaced firing order, CTS, TPS, MAP, EGR, distributor/cap/rotor, plugs, timing (0 with EST disconnected), fuel pressure (13), vacuum static (18) and leak tested using propane, O2 sensor, knock sensor, and compression (145-160)
Recent changes that somehow caused the problems: Edelbrock heads/intake, shorty headers, new distributor, CAI, new coil , new fuel pump, 65 lb injectors (OEM 55's same problem)
Running a log using TunerPro indicates that BLM is consistently 107-117 indicating that it thinks the engine is running rich. No CEL and no error codes logged. If it helps, the log is available.
If I disconnect EGR, Less backfire (but still there) and no hesitation off idle.
