AEM FIC help - Toyota Yaris Forums

shawnitz · 10-03-2020, 10:14 AM

Thank you for the reply! Much appreciate the support!

I have tried various rates of acceleration change (pedal pressing rate), from smooth to fast and car always becomes undrivable when the pedal reach around 90% of travel. Pressing more does not help either. And this is true at any rpm below 4-5k rpm.

I think the issue is FIC fueling strategy. Its just slow to respond to change as fueling goes from sequential to batch fire in open loop wide open throttle. I say this because the car drove completely fine without coolant temp and O2 sensor during warmup. Due to the fault (ECU OL-Fault), it spray in batch fire the entire time. Yet it switches to sequential when the engine gets hot even without any coolant temp input!

Im not sure if Boomslang harness has the mod already.

Could you share a map you are using with 1NZ please?

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10-03-2020, 10:14 AM	#5
shawnitz Drives: 2008 Yaris Join Date: Oct 2020 Location: Toronto Posts: 3	Thank you for the reply! Much appreciate the support! I have tried various rates of acceleration change (pedal pressing rate), from smooth to fast and car always becomes undrivable when the pedal reach around 90% of travel. Pressing more does not help either. And this is true at any rpm below 4-5k rpm. I think the issue is FIC fueling strategy. Its just slow to respond to change as fueling goes from sequential to batch fire in open loop wide open throttle. I say this because the car drove completely fine without coolant temp and O2 sensor during warmup. Due to the fault (ECU OL-Fault), it spray in batch fire the entire time. Yet it switches to sequential when the engine gets hot even without any coolant temp input! Im not sure if Boomslang harness has the mod already. Could you share a map you are using with 1NZ please?