I been restoring this car for 5 years now and finally got it running my issue is when the car is under a load it dies. 306 hci, csu blow thru carb, on3 turbo kit,c4, a1000 fuel system, Msd6 btm, msd distributor locked out and set to 35 before boost fuel psi is at 7. Ngk one step colder plugs gapped 28-30, AFR at idle is around 12.5-13.0 I'm stumped I moved timing up and down and played with fuel I just can't get it runing any better car can't even do a burn out just no power. Any help would be appreciated thank you.

 

What happens to afr when under load? Fuel pressure? What ign system? Gapping plugs to .020"-.025" wouldn't hurt to start.

 

crushing 14-15 when I let out throttle it spikes to 16 after rolling on to 1/4 throttle and Ok I'll try gaping plugs to 20-25

 

Fuel psi is at 7 msd 6 btm locked out msd distributor

 

I tested btm with regulator and air compressor and it drops timing like it suppose to also checked regulator and it increases psi when it gets psi.

 

Make sure your fuel pressure regulator is referenced to boost. Fuel pressure must remain at set point above manifold pressure ( 7psi fuel pressure+10 psi boost needs 17 psi fuel pressure under boost)

 

I have it hooked up to carb hat

 

I have it like this: Fuel regulator to carb hat, BOV to manifold, wastegate and msd BtM carb hat, boost gauge manifold.

 

Should be below 12 on the wideband at WOT in my opinion to be safe.