With an 84mm B18C stage 2 cams and ported heads can anyone give me an idea on injectors pulsewidths at idle? I'm using an Electromotive TEC3 and I just started the motor for the first time and its running really really rich with the values the start up wizard gave me. Just looking to find out what people seem to set there idle pulsewidths at.

Thanks for any input.

 

almost 2

 

Wow the setup wizard set them at 2.7ms. Thanks.

 

1.8-2.0 Miliseconds. What # does the wizard show for max. @wot? I am thinking 9-10

 

Yeah its about 10.3-6.

I keep fouling plugs so i'm going to get some stock heat range plugs to tune with. I have 2 steps colder in it right now because I plan on running nitrous but I can barely keep the motor idling without it loading up and fouling the plugs. And the EGT's at idle are only getting up to 375-400.

 

As Don said, pulsewidth should be under 2.0ms for the idle areas. Make sure base timing is set somewhere around 15-18deg BTDC.

Cranking should be roughly 75% additional fuel, this might be called 'Cold Start' in the Tec3 software, and should taper to zero by 2000 turns.

Start with your Warmup Enrichment at zero until you tune warm idle, then go back and wait for the engine to cool down before adding more fuel.

Are you using an Electromotive trigger wheel w/mag sensor?


Modified by 92TypeR at 6:59 AM 4/28/2008

 

Yes I'm using the Electromotive trigger wheel and mag sensor. It works really good I'm just having trouble getting this thing tuned.

75% cold start enrichment, I'll have to see what its set at. Right now when I start it I have to give about 25-50% throttle in order for it to start.