DFI to Classic FAST inj PW

[Turbo-Archie]

I've been running the old school DFI for years and just upgraded to a classic FAST system.

Question is about Inj PW.

The old DFI would be around 10-11ms @ WOT, the classic fast seems to be 2x the old box @ around 20ms @ WOT. Is this correct and why?

Thanks!!


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[quickt]

The Gen 6 more than likely is double-fire batch. I would guess your fast is sequential . Double fire batch fires every 360 deg and SFI fires every 720 deg. So 11ms would be 22ms in sfi mode. If you are at 6000 rpm and over 20 ms your running injectors static.

 

[Turbo-Archie]

Thanks Lonnie,

I got it from Otto years ago and didn't think it was SFI.

Also, is there a thing with bad grounds?

During a 1/4 run, the inj PW went from the high 18ms to 3-5ms like there was a glitch in the log.....


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