Seem to be losing ground....

[DaddySS]

I had a little bit of KR, interestingly only on light throttle after decel. I tried adding fuel in the ranges wher I seeing the KR by increasing the VE slightly and by decreasing the multiplier vs Lambda in the PE vs RPM table. Then I was getting KR in the high MAP areas so I added more in those ranges and in the commanded fuel while in open loop table. Any suggestions on where I am screwing up? (be kind ). Now I am getting more KR than ever and finally just reloaded the original calibrations to avoid any damage from ping.

[Doc]

You need a Wideband O2 in order to "see" what is happening. Read, and employ the AutoVE tuning tutorial. It really works.

[DaddySS]

I just picked up the WB02 but I have to figure out where to weld in the additional 02 bung. In the interim I was hoping that by just richening the mixture in the areas where I am getting the KR I could reduce it.

[Doc]

You can just pull out one of your front O2s for the time being as when you do your AutoVE tuning you will be in Open Loop Speed Density, i.e. the pcm will be ignoring the Narrow band O2's anyways.

Anymore excuses?

Get to it big boy. You have the world's finest hardware/software combo for tuning GM vehicles. Time to get what you paid for. We are waiting here if you have anymore questions.

[dc_justin]

There are two components to detonation... fuel and timing. You're playing with the fuel, but what's your timing like and what rpm / g/cyl is this knock occuring at ?

[DaddySS]

You can just pull out one of your front O2s for the time being as when you do your AutoVE tuning you will be in Open Loop Speed Density, i.e. the pcm will be ignoring the Narrow band O2's anyways.

Anymore excuses?

Get to it big boy. You have the world's finest hardware/software combo for tuning GM vehicles. Time to get what you paid for. We are waiting here if you have anymore questions.

Geesh, I didn't think of that....now you have me all excited! So I pull the front 02, install the LM-1, set it up according to the LC-1 directions and then follow the auto tune....I'll see if I can get through it without screwing anything up!

[DaddySS]

There are two components to detonation... fuel and timing. You're playing with the fuel, but what's your timing like and what rpm / g/cyl is this knock occuring at ?

Understood, timing is at 29*
RPM 2700
MAP 82
TP 31%
and again at:
27*
1900
67
17%
I haven't moved the timing, just been adjusting the VE and PE/RPM.

Thanks for the input

[joecar]

Post your tune, we'll take a look at it.

[DaddySS]

I would really appreciate that. I have attached the tune file and the log file.

[SSpdDmon]

Try my timing tables (high octane and base spark tables). The '00s had the most aggressive timing of all the years. So, it might be necessary to pull some in some areas and more in others.