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Power FC idle

Guest KILLER-T

By Guest KILLER-T,
in Engines & Forced Induction

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Steve Grand Master

Steve

Posted
Posted

Killer T,

First Line: 100/100/100/101/102/103/101/100/100/101/103/101/100/115/119/125/125/125/125/125

Second line is the same

third line:

100/100/99/101/97/102/100/.....there after as for line one and two.

A bit different from yours, I am running a Z32 AFM as well, so that may be influencing things. My AF ratios are a pretty constant 12.3:1 and I get no detonation even on hot days running 0.85bar boost.

  • 1 month later...
Joe Community Regular

Joe

Posted
Posted

sorry late reply,

but did u end up getting it fixed?...

i have the same problem

funny thing is that it goes to normal after a 30min drive but sometime it doesnt, its so unpredictable

most of the time i feel like pulling my hair out & packing the power fc away & put back in the factory ecu & some other days i dont take notice of it at all.

it normally goes 1200rpm then drops back to 750rpm then rise again.

Some people has said it was the wrong selection of your AFM, my settings on afm meters are correct so i dont know.

If you have solved the mysterious idle problem please let me know ;)

no_name Apprentice

no_name

Posted
Posted

ive known a few powerFC's to hunt at idle. mine is good with a Z32 AFM.

the fuel maps should be very close to the 100 setting for a car with stock cams. the higher the number the richer so if your car is cammed then add a bit more fuel to stabilise it.

check the temperature compensation. sometimes if the idle is rich and the temp compensation kicks in the idle deteriorates.

check the temperature the engine is running at. (see above)

rb25 should idle with 15 degrees timing. if i recolect. check this too in the ignition map.

check what the timing is with a light. if the reading on the crankisnt the one on the map then you should correct this.

check the fuel cut recovery points and idle speed.

pawL.

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