Re: Dual sync distributor
 

How's the AFR look up in the RPM range?

Re: Dual sync distributor
 

A few cylinders get rich during that little breakup. Right now I have o2 sensor in number 8 and it reads rich at that high rpm. That plug gets wet with fuel also. Number 1 has a good clean color so leaning the fuel map at high rpm will be dangerous to some cylinders as the breakup seems to only affect certain cylinders and right down at the finish line. I was leaning out number 8 to try and help as well but it still happens.

I just want to figure out how to hook the FAST Dual Sync to the Accel DFI ECU and see if the signal cleans up a bit or even just run a test n tune with a crank trigger to see if that clears it up. Then at least I will know where the problem lies.

Crane cams says this HI6 box and LX92 coil should be fine up to almost 8000 rpm and I'm not even close to that.

Re: Dual sync distributor
 

MAP - Blue
RPM - Red
Injector Duty Cycle - Pink
Pulse Width - Teal

Re: Dual sync distributor
 

Bobby, if you are not running it in Sequential mode, and individually tuning the cylinders, there is no need for a cam sync distributor.

Re: Dual sync distributor
 

I prefer sequential for the extra individual cylinder tuning ability.