3 Bar MAP scaler settings?

[LS1FREEK]

http://www.performancetrucks.net/forums/tuning-diagnostics-electronics-wiring-161/3-bar-map-scaler-setting-efilive-507346/

[BLK02WS6]

Posted up there - I'll try to help you out tonight when I have my laptop available...

[BLK02WS6]

From your post over there - so others don't have to go to another site... Also attaching your tune and log...


"I'm a bit lost guys, is there a certain scaler number that all 3 Bar maps should use? I set mine the same as my brothers but then we were reading different PSI when key on engine off, should I use the MAP offset to get it to match his psi and use his same scaler number? Problem is I can't seem to get enough fuel to it when idling, and then when i hit the throttle a little bit its way to rich...

Here's a screenshot of the scaler settings and and a the tune file. The tune file is setup for SD without PE or O2's. It idles with the WB pegged at 17.0 AFR and when you gas it a little it'll go 15-11 AFR, I havent driven it yet so mabe I need to try that first, I just dont understand why its running so lean at idle! I dont have vacuum/boost ref regulator, its holding steady @ 60psi. Plus if you look @ the Injector Flow Rate table you'll see I have it set to 80#, when my injectors are actually 108# @ 60psi, but this was the only way I actually got it to run but it's still way lean at idle! The scaler settings here are setup to where the MAP reading @ key on engine off match a stock trucks reading.

Oh I also posted up a LOG, as I slowly rev it here its still showing 17.0 AFR until right before I let off the gas. Gives you an idea, I just dont get it! I have big fuel in the VE, and I've got the Injector Flow Rate set way lower than what they actually are but it still runs lean??? BTW, injectors are new FIC 1000cc Bosch, and I tried when I stalled it up turning 1 off at a time and you can definitely feel they're all working."


Why do you not have a vacuum/boost referenced fuel pressure regulator? What kind of regulator do you have? If it is not referenced, you can't have a flat injector flowrate table like you have... need more info on that for starters...

[LS1FREEK]

I'm running a set of stock truck rails that have the regulator built in. First off, I talked to the guys over at FIC, and he told me there are 5 different injector tables I need to change for these injectors. I'll post up a new tune with the revised tables, compare if you like. Fueling seems to be working now!

13873