I have a fairly built ls/vtec with:
81.50mm pr3 pistons
B18b1 Block bored/honed
Balanced rotating assembily
B16a2 Head
RC 310cc injectors
4-2-1 header with muffler
Cold air intake
Blox type b cams with blox valvetrain
skunk2 cam gears
omni power throttle body
pro engr intake mani,
running on premium 91 octane, and we can advance the car 60 degrees on timing and the car still won't ping. I could use some advice to what is wrong with the car. I also had a loss in horsepower since the last time I visited him, and it was a 25-30whp loss.

Cylinder 4 3 2 1
Compression was 215, 210, 220, 225
Leakdown test 6%, 0%, 2%, 0%

 

Your tuner should have answers for you...

1. Post the dyno sheet
2. Post the engine management it was tuned on
3. Post if the distributor timing as synced to the engine management.
4. Post the calibration/bin file/ datalogs