Is this right? I logged this and then added this to 4307 and logged it again and came up with the same number so I dont think something is right.
Desired Airflow {B4307}
Is this right? I logged this and then added this to 4307 and logged it again and came up with the same number so I dont think something is right.
How long did you leave the car running? Could it be added airflow from startup tables?
You could also check something like the GM.DYNAIR PID to see what value it actually has.
Andrew
EFILive Crew
The first pic it was at idle for about 10 min and in the 2nd pic that was idle and driving for awhile. I just noticed that I kept getting .26 in the same block so i firgured I have something set wrong.
"0.26" is well within the operating ranges of the PCM. What's all done to the car? If the IAC counts are close to 50~70 when warm, I'd leave it alone. You're in a good spot.
**If it's an M6, make sure you were logging without the clutch pressed down and the gear selector in neutral. If I recall correctly, the PCM assumes the car is in gear except for when the clutch is depressed. Also, make sure the tables in the tuner are displaying enough decimal places.**
02 Electon Blue Z06 430hp/390tq (before CNC heads)
237/242 .603/.609|CNC ported heads|Halltech CAI|SVO 42 injectors|NX TB150 wet shot|Powerbond UD Pulley|LG Pro headers|Borla Stingers|DTE Transmission Brace|Harden Output Shaft|Ram HD Clutch| B&M Ripper Shifter|Slotted & drilled rotors|Tuned by LS1 Power Tuning
After the heads being done I have a horrible cam surge now. Thats why I am lookin ginto everything.
Your cam surge is most likely due to timing and fueling. If that's an accurate log of your idle trims, then you're ok there. Where are you seeing the surge? What is the timing doing in your logs during the surge?
It surges with or without the a/c on. Its worse when it hot outside vs when its cooler. The timing it staying the same. I have been playing with latly have went from about 22-29 at idle.
minytrucker - Lemme tell you what I learned about surging. Fuel.
I had a Gillies style low load low rpm bucking and surging problem. Could never find the culprit until I started running dual widebands. She only bucks when the AFR's between the two banks varried more than 3%.
I got the car into a nasty bucking state, set cruis control, then used BIDI to add fuel until it stopped. Like wise, I tinkered with timing with little noticable results.
I see this may just be an idle surge, check around the manifold with some carb cleaner or starter fluid.
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