I have a big problem, Every time my vtec engages the engine misfires and wants to stall. I just got done rebuilding the motor its a B18C1. I have no clue on what to do about this I tried everything. Timing, valve adjustments, etc. Nothing works. The thing I dont understand is if I change the cyl.# from 4 to 6 on my VAFC the problem goes away but vtec hardly pulls and the rpms read different. Can anyone help me on this...

The Setup:

The Head: Mild port and polish, SKunk2 Stage 2 cams, Springs, Retainers, Valves, AEM Cam gears,

THe Block: B&B, bored 20 over, Endyn Rollerwave Pistons, Eagle Rods

Other: SKunk2 Intake Manifold, AEM Type R cold air, DC 4-2-1 header, 2.5 inch cat back, Apexi VAFC, NGK Platinum Plugs, MSD 8.5 Wires

 

Have you tuned it on a dyno yet?