Spark plugs back firing through my intake

[chase_mull3r]

Can someone help me out. I'm using a megasquirt ecu and I can get my car running and idleing but when I start to rev it up you can hear it back firing through my intake manifold. I'm sure it has to do with the timing of the car but I'm not sure what

[chase_mull3r]

I have the seta block with an 885 head NA. If anybody has a timing and fuel map that I could use that'd be great

[fergie]

Have you set up the base ignition timing for the ecu? Even if the engine timing itself is good, the ecu needs to know when to fire the spark based on crank rotation.

[kyleconstantine]

Post a copy of your tune let me check your ignition settings