TURBHOE

iTrader: (4)

how low is too low? at what point does too rich start to wash stuff out? i can't gt my idle leaner than 10.5-11.5 with out missfireing.

BlackGMC

iTrader: (31)

IMO if your runing 10.5-11.5 at idle then you have something mechanically wrong,,, Mine sits at 14.9 all day long with no problems.... What timing are you running at idle?

WorkTruc

iTrader: (8)

TURBHOE

iTrader: (4)

sorry for the confusion. i installed new injectors. they are fat slow pigs and will misfire if the PW is below 2.5ms. the truck wil buck and die and all sorts of things if i go below 2.5-2.6ms. timing is around 20 at idle.

jakebdb56

iTrader: (24)

I'm assuming you've tuned your VE at idle?

Also, what is in your running airflow idle tables?

TURBHOE

iTrader: (4)

shouldn't have to change that for just new injectors. here is a tune and a log

03sierraslt

iTrader: (22)

What injectors are you running? 50lb's? Your offset table is high and your Min pulse is pretty high as well. I can get my 60lb Seimens (72's) to a 1.6pw

TURBHOE

iTrader: (4)

yeah the 50lber's. wierd thing i don't know if you seen in the log but my left bank is leaner than my right. i just swapped the WB around to the left side and it confirmed it. if i lower the offset and the min pulse tables the truck goes WAY lean as in the wideband can't detect it lean. and it sounds like its camed. bucking and coughing and all kinds of goodness. it will also die when you come to a hard stop or blip the throttle.

TURBHOE

iTrader: (4)

can injector angle in the manifold cause a lean affect?

TURBHOE

iTrader: (4)

why do i keep getting LEAN dips on the left bank and not on the right? WTF maybe if i could get them to idle together i could lean it out some. but the left bank try to make the computer add fuel and when it does the left bank goes way rich. i tightened all of the exhaust manifold bolts. and am pulling about 2" more vacuum with my new injectors than my old.