this is what i emailed Corbin, wondering what you guys think..
i was just doing small tuning at idle and 0psi.. i notice at idle with using stock 235cc injectors cleaned etc by RC i have to lower my idle fp to 40-41psi instead of the 'stock' 47psi at idle to get my fuel trims good. at 40-41psi of idle fp for stft i get -/+ 3% moves within that, and ltft is about +0.8% to --0.8% sometimes -1.6%.. i assume i should follow what my datalogger says to tune for idle then what its sopose to be from the factory?
thanks

Michael
99gs
HRC Stage IV 8-Injector Setup
2GNT Member #32

>i assume i should follow what my datalogger says to tune for idle

Yeah.

>...then what its sopose to be from the factory?

You can't set these numbers at the factory. All they do at the factory is put in a non-adjustable fpr, 235cc injectors, and let it rip. The computer adjusts to the correct trim automatically. You can only "set" the trim with an adjustable fpr, and it looks like you've got it set perfect - right in the middle.


95 Eclipse RS : 5 speed
15.901 @ 88.34mph
Jeep TB writeup - http://www.dimensia.com:81/jimbo/JeepTBfor2gnt.html

good deal.. i will start to do some small tuning up 0psi again since i got that down..
thanks dude
Michael
99gs
HRC Stage IV 8-Injector Setup
2GNT Member #32

What address did you send it to? I never got it. Anyways, looks like you are on the right track. Now adjust fuel pressure to get good fuel trims and transitions at 0 psi. Settings for 0 psi take precedent over idle settings. Idle will take care of itself.

Corbin

'95 ESI-T
HRC+FMIC+ETC...



Gimme fuel...Gimme fire...Gimme that which I desire

odd, before i had to set my idle fp low at 41-42psi now i have to adjust it to 49-50psi at idle to get close to the same fuel trims. once i hit 0psi stft is like -7% and ltft locks at -13%to-16%.. odd part is sometimes my ltft will go to like +7% at idle.. is that normal?

Michael
99gs
HRC Stage IV 8-Injector Setup
2GNT Member #32