So who wants their ECU's "Chromed"?

[sublime_whatigo]

I guess you didn't understand my post. I was trying to lean it out, it didn't work clearly. I have a slight lower plenum leak, car idles at 14.7 with my emanage blue hooked up.

[Greg E]

I have a slight lower plenum leak

Closed loop idle is not only trying to target an RPM, but an AFR as well. In the ECU's pursuit of trying to get them both when conditions aren't right for one, the ECU will jump back and forth trying to get either one matched.

With the E-manage hooked up, you're telling the ECU the airflow itself is different than what it actually is, so that's how you're getting your 14.7. The truth is though, you shouldn't be using the WB for closed loop tuning as the readings at the NB will probably be different at their locations vs the WB.

...and yes there's a good change the NB's are wrong....

[sublime_whatigo]

I should further explain slight, as in it looses 1psi every second, pump in 10psi it takes 10 seconds. Basically the norm for most cars i've tested. And my NB's are 2 years old, so as accurate as they can get. I refuse to believe I can't get it to idle properly with these conditions.

I wouldn't of had any leaks as I've taken care of the TB shaft seals, replaced the lower plenum gaskets with new oem but mitsu changed them and apparently they are no good. I compared the old to new and I knew I should of used copper gasket spray on them.

[Jesters Deadd]

Sooo you are saying you are running 560s and it it keeps idling rich? Did you check your O2 call outs and make sure you didn't switch em? What does your low fuel trim say?

[sublime_whatigo]

Where would I be checking my call outs? You guys lost me with some of the recent talk about the o2's. Low trim was calling for fuel, 104% iirc. Maybe I'll con Greg into taking a look at it since he's supposed to be coming to UMG, I got here yesterday.

[Jesters Deadd]

Where would I be checking my call outs? You guys lost me with some of the recent talk about the o2's. Low trim was calling for fuel, 104% iirc. Maybe I'll con Greg into taking a look at it since he's supposed to be coming to UMG, I got here yesterday.

the O2 in your wiring harness adaptor... if you flip the O2s then the front bank will try and add fuel to the rear and the rear bank will keep taking fuel from the front or vice versa.

[Boostaddict]

Where would I be checking my call outs? You guys lost me with some of the recent talk about the o2's. Low trim was calling for fuel, 104% iirc. Maybe I'll con Greg into taking a look at it since he's supposed to be coming to UMG, I got here yesterday.

Shouldn't you be targeting a 0% LTFT Low for idle?

What is your idle rpm in SAS mode?

[Goallie11]

Shouldn't you be targeting a 0% LTFT Low for idle?

What is your idle rpm in SAS mode?

You should be targeting 100, thats what the computer shoots for, for example it'd be 14.8 that it should be idling at, and 100 would mean that it's at 14.8

If the trim is higher that means it's trying to add fuel, lower it's trying to take fuel away.

[Chris@Rvengeperformance]

you should be targeting -5 to +5 % on the long term trims with flashed ecu's in evoscan.

[Boostaddict]

you should be targeting -5 to +5 % on the long term trims with flashed ecu's in evoscan.

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.