So who wants their ECU's "Chromed"?

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Originally Posted by Boostaddict

Thats what I thought... 0% nominal +/- 5%. The older gen 3S ecus had the fuel trims centered around 100.

So at 104% he needs to lower his injector scaling significantly.

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yeah I don't know where he is seeing 104%, it won't go more than 12.5%. Must be a typo

He must just be seeing the number 104, with my Blackstealth lcd boost controller thats what it shows, only the number.

I am seeing a lot of weird numbers in evoscan. .1008 is what i seen today, dont remember the exact number from before but I was converting it to look like mmcd style logger stuff.

Also bumped the idle, now getting 1 o2 to cycle a bit at idle but still rich on wideband and the other o2. Now cruise is also 13.8ish and getting very slight stumbling on wot. This is going to require a lot more messing around than everyone makes it out to be, I can throw a half ass tune on an emange blue in 5 min on any car.

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Originally Posted by sublime_whatigo

I am seeing a lot of weird numbers in evoscan. .1008 is what i seen today, dont remember the exact number from before but I was converting it to look like mmcd style logger stuff.

Also bumped the idle, now getting 1 o2 to cycle a bit at idle but still rich on wideband and the other o2. Now cruise is also 13.8ish and getting very slight stumbling on wot. This is going to require a lot more messing around than everyone makes it out to be, I can throw a half ass tune on an emange blue in 5 min on any car.

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Something else is wrong. It took me all of 5 minutes to get my car running properly on the flash ECU.

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Originally Posted by sublime_whatigo

So I have an interesting one for you guys. With the little driving i've done on the car it runs great except for the idle, sticks at 13.6-13.8 wideband and o2's are pegged rich as well. So I go ahead and make a change and it holds for 10seconds and goes back to that 13.6 idle. I messed with the afr, injector sizing and scaling. I told it I had 750cc injectors (i have 560's) it all but stalls from being so lean and then it goes right back to rich after that 10seconds.

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Sounds like to me your fuel pressure regulator is acting up. Perhaps your FPR hose has a significant leak, or if you're using a stock FPR & hotwired fuel pump relay this will cause idle to run excessively rich.

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Originally Posted by aaronatstate

Something else is wrong. It took me all of 5 minutes to get my car running properly on the flash ECU.

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yes, I only had issues when there was something wrong with the car, when it was fixed the base tune with injector latencies and sizing from a source on the internet produced a totally driveable tune.

Sorry I was drinking and frustrated. There must be an issue somewhere, fpr is an aem and working fine. What are the actual pin-outs for the o2 sensor part of the conversion? I think I have (99)71-(92)55 and 72-56, my xcel file also lists 3-55 and 4-56 for the heater crk.

Maybe there is absolutely nothing wrong and you're just using the wrong evoscan XML file. :p

Yup, paid Greg a beer to help me out. Evoscan needed a re-install, numbers showing make a lot more sense now.

Greg flashed mine today, after a few tweaks it feels like a whole new car. I'll be making a thread about it soon, hope Greg will chime in with exact details.