Burnett03

Hey guys, can someone take a log at my tune/log and guide me a bit? Im trying to do the AUTO VE but its hard because the truck wants to stall when coming to a stop so i can't really drive it. I tried doing the auto ve on the idle portion and it seemed to get it closer to 1.0 lambda but if i rev up the truck the idle wont catch and it will stall. Also when it's idling if the fans kick on it wants to stall also. Any insight to get me going? Thanks.

Deka 80lb injectors
3 bar map
IAT in boost pipe
adjustable FPR set to 58psi with vacuum line on.
AEM wideband being read through efi live.

silentbravo

iTrader: (1)

Did you add the E fans or did it come with them?

Also were moving or stopped during this log? Not sure why your TP% is above 0 unless you are holding it or moving.

Did you already adjust the tune for the larger injectors?

Burnett03

The tune is adjusted for the larger injectors. The fans have always been on the truck, it's an 06. The TPS has always read about 14-19% even on the stock tune? Ran the RAFIG and RAFPN today which helped the idle out. Truck still drops very low in the RPM range when coming to a stop and wants to also almost die when the fans/a/c comes on. Here is my latest tune.

2002_Z28_Six_Speed

iTrader: (20)

VE looks way too crazy. Use the wideband to assess trends and apply those trends to the VE. Same with MAF.

Is the WB analog or digital? Make sure in EFI it reads the same as on the WB.

There is no way you need 16g/s to idle.

Burnett03

WB is a serial connection that is reading correctly in EFI live and matches the gauge. I haven't had a chance to really dial in the VE table because the car wants to almost stall coming to a stop. Im not running a maf. Just speed density. 16g at idle is what rafig wanted. Should I rerun it? Thanks

2002_Z28_Six_Speed

iTrader: (20)

Also make sure that all of your injector data is 100% correct. You can add some to your cracker to help with the stalling.

Here is a concept of what i mean but im not sure if the exact values will be helpful.

0.349609 0.599609 0.840574 1.079147 1.299660 1.479243 1.595942 1.637667 1.561490
0.599609 0.599609 0.907127 1.153537 1.392521 1.595061 1.733260 1.802804 1.821376
0.799805 0.799805 1.024504 1.269711 1.526336 1.758145 1.924489 2.026685 2.119090

Burnett03

Thank you. I belive my TPS is reading that way because i am using the wrong PID. I also noticed if i use the DVT tab to engage the a/c or the fans the stalling doesn't happen, but if i let the truck do it on it's own it does...

Atomic

iTrader: (42)

Tps will read that on an electronic tb.

I can't look at the tune right now, but I bet you need more throttle cracker airflow and probably base running airflow. Raising the idle target rpm also helps.

Burnett03

Thanks Atomic. If you get time to browse the tune later please do. Seems like Idle airflow (B4307) is to high but that's what the truck wants to idle good.

Atomic

iTrader: (42)

I dont use EFILive so I wont be much help with it. But in general if the idle spark is around what its set to and isnt having to do a lot of trimming then the air is probably correct regardless of what seems too high or low. If idle spark is way low (like always single digits) its probably too much air. The STIT will tell you what it wants idle air to be.