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Old 10-27-2009, 08:05 PM   #1
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Car: 90 454SS
Engine: 454 TBI
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High Load Sync to Async
Can't get enough fuel at high loads with injectors in sync mode.

I understand that the duty cycle needs to be above 90% for consistent async fueling at high load.

Has anyone devised a method to calculate settings from one to the other without it being a stab in the dark (or basically starting over)?
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Old 10-28-2009, 12:32 PM   #2
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Re: High Load Sync to Async
I dont think settings need to be changed. I recall it flips asynch why less fuel is needed (idle) and when more fuel is needed(AE/PE). I dont believe your OL. choke - cool coolant - AE - PE will be affected. and CL is just looking stoich. Do you have room to increase FP(and change BPC) to achieve adequate fueling?
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Old 10-28-2009, 01:07 PM   #3
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Re: High Load Sync to Async
Very slow MPH for that time
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Old 10-28-2009, 01:26 PM   #4
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Re: High Load Sync to Async
is this with a stock fuel pump? stock injectors?
have you changed the Pulse width. increase the LV8 Accel enrichment multiplier vs Delta.. change your ECM injector flow rate a few points higher.. lower % TPS to enable PE. Increase crank fuel PW Multiplier
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Old 10-28-2009, 01:26 PM
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Reload this Page High Load Sync to Async
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