bwy23

iTrader: (19)

Suspect is a 98 ls1 6 speed. Car is stock except for sts rear mount, 60 lb deka injectors. Im tuning using hptuners and lc1 wideband. The car feels good down low off the boost. throttle response is good. The target afr is FAT to give me some room for error. When the car gets into boost is falls down (as if on a two step or hit the limiter) I can let off throttle and it catches itself. Ive been hand smoothing the ve and I think Im going in the right direction, but it looks to me its just getting WAY to fat in the upper rpms in boost and thats whats causing it to "miss". I need some eyes to look at ve and maybe some other parameters that i may be missing something on. Widband was free air calibrated before these logs. Thanks LS1 TECH! Again...SD 2 bar tune running in OL

PS The "trythisone" tune is the one that the log supports

"trythisoneafterhandsmoothing" is the adjustments i made after the log...it has not been ran yet.

BLK02WS6

iTrader: (2)

Do you realize that while in boost, you are running 31.5 - 33.5 degrees of timing? WAY too high! Looks like you are running off of the base tables instead of the high octane...

bwy23

iTrader: (19)

No I didnt! I guess i didnt cut and paste from the old tune. I made some adjustments to the timing and nothing else and wow what a difference! Car actually responds to boost now. Here are the most recent tune and log.

BLK02WS6

iTrader: (2)

You still have major problems - look at frame 2403 of the log! 106 kpa and 33 degrees of timing!

Your injector data is not correct - that is causing the scaling to be off for airflow and that determines where you are running in the high octane table. In the frame above, you are at .49 gram/cyl...

bwy23

iTrader: (19)

Its a little clearer now. The injector data was from a spreadsheet i found online (for flow rate vs kpa). I hasnt clicked until now that the timing table references rpm/gsec and not ve table which is pressure not airflow. So i assume now that the ecm is coming up with funky calculations and thats throwing of the timing curve since there is no maf to reference. I would pay someone for the correct data on these deka's. I see how important it is to have so that the ve and timing tables dont get butchered.

BLK02WS6

iTrader: (2)

Here are the injector flowrate values:

MAP (kPa) LB/HR
0 69.2832541
5 69.7150484
10 70.1441846
15 70.5707114
20 70.9946757
25 71.4161231
30 71.8350981
35 72.2516435
40 72.6658011
45 73.0776116
50 73.4871144
55 73.8943479
60 74.2993494
65 74.7021552
70 75.1028006
75 75.5013201
80 75.8977470

bwy23

iTrader: (19)

Wow thank you! I will restart on the ve on the lower end and see what i can come up with.