yamaman57

has anyone done 60# with 2.7 or smaller, im running a 2.6 and hp tune and i am having problems with the car fluxuating at idle. it idles up and down in like 200 to 300 rpm incriments, and simetimes drops to like 250 rpm's about to cut out. the kid who tuned it has no clue and i was posting this for anyones input or if they have a clue what is causing this. thanks

blackngold20

he may need to check the timing

yamaman57

i dont think there are timing issues, everything he can see or check with the hp tuners is fine. he has done this same tune on about 10 cars, but mine was the only 07, and the only one having this problem.

Ron9919

the timing map is fine and the short pluse adder is fine too. this is the only problem we are having with the 07.........Also how come TQ management can't be turned off on the 07's?

yamaman57

haha thats weird i just posted this thread and you are online.

Ron9919

yeah i sent one of my buds your tune to look over and see what the hell is going wrong with the idle.

yamaman57

sweet yea it is still doing it pretty bad in the morning when i let it warm up, and i threw a code again, didnt scan it but i know its probably the same thing. i need to get the plugs.

Area47

you can turn off the torque management. my car idle hunts sometimes with the a/c on. not that big of a deal. i want to say it's something in the ve table, but yet i don't may sound wierd, but have you checked for vacuum leaks?

3fo893013L

well I'm not going to be the one that said I told you so but since the 06 and 07 have totally different ECU's it's possible the tune for an 06 has some incompatabilities with an 07since it's a 32 bit ECU and not a 16 bit.

Torque management is on there you just have to look harder. The idle fix for 06 doesn't totally apply for an 07 since the tune has a few differences in it.

I'd also look at your MAF tables and spark.

pmerritt

bump your idle up to 950rpm and see how it does.

Ron9919

his idle is at 900 right now no need to bump it up...........I didn't know that about the different ECU's does any one know the fix for the idle bounce for the 07. Also TQ Management under Trans there is nothing there like the other yrs. of LSJ's like the shifting properties.

saunders1986

iTrader: (1)

my 07 with stage 2 in the morning on cold start up the rpms go kinda crazy also, up down up down, but nothin like its gonna stall, also runs awesome, no CELs... and once it warms up it dosnt do it anymore

Area47

ok this seriously sucks for me then. im about to do 60's in a couple months. if this is the way it's going to act, i may lean more towards 50's


ron, if you want too. i can send you a trq mngmnt map that i have, and what i load as a base map into stage 2 cars. everything but trq is the same as gm stuff on 07's. IE my stock stage 2 map. there is a lot hidden as far as this goes.

Ron9919

yeah do that and let me look at it. Redline0568@comcast.net