Yes I did notice that, but then you proceeded to give instructions which could toast an engine. Your map is one thing, the stuff you said after was another.

Ive yet to have one car lean out with a/c on at idle. I dont know why your car does, but mine and the rest can hold 14.7-15.0 at idle with or without the a/c.
o2 feedback actually helps keep it stable, when your fuel map is scaled and set correctly, the function does a good job.

My post was not intended to start a shit storm, I was simply giving some advice that may save a motor in the future. The stock pfc map needs at least 7 deg taken out before any tuning should be started on 98ron on most setups.

No hate, just sharing information.

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V5 2 door Sti, built ej257 Gt3071r, PowerFC, sti 6mt long ratio. Datalogit

You've been here for 5 years, this is your introduction?

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Air is for pussies.

Anywhoo....... Long time lurker.......... The OP was based in Chile.

We chatted at length about his pfc, mapping (and what the RON of his local fuel was - 95 from memory?) & the risks if he fucked it up..

He had no option to go to a local tuner - because there simply wasn't one.

He pulled 15 degrees out of the entire map as a starting point & began working from there.

Last I heard his car was running fine with 1.4 bar of boost and a knock index maxing at 8 (off a new knock sensor) & with afr's of 11.1 at peak boost (off an innovate wideband).

Who knows how well it runs? The guy's happy though.

Not everyone is privileged enough to have AWD dynos at their disposal with tuner's who know Subaru - let alone know what a powerFC is.

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What does a knock index maxing at 8 mean? 8 knock detections over a certain period of time?