Acceptable KR, stock PCM, L36

TDCRacing · 04-15-2008

Originally Posted by IndeedSS

Although the NB's arent consistant, most have found 920 to 950 the right range. My WB at 11.6:1 AFR was about .920 mV .

So it's possible you may be running a little lean with o2's in that range

**Sinister Drag Designs** · 04-15-2008

With the my 9c1 impala, im seeing 9* of KR at WOT
my LTFT's are at zero, and fueling seems near perfect.
im suspecting my unknown mileage injectors are clogged as my IPWs go pretty high . Ive changed a few things on the fuel system and everything was on its last leg and had massive build up and deposits. If this doesnt do it im removing my 300k cat.

god i cant wait to get rid of this motor and entire fuel system.

Have you tried running 93 octane to see if its false knock?

**Sabrewings** · 04-15-2008

Originally Posted by Sinister Drag Designs

Have you tried running 93 octane to see if its false knock?

I still have a tank of 93 in from when I was running the ZZP PCM. Haven't gone back to regular yet (a tank lasts me a while).

TDCRacing · 04-15-2008

Originally Posted by Sinister Drag Designs

With the my 9c1 impala, im seeing 9* of KR at WOT
my LTFT's are at zero, and fueling seems near perfect.
im suspecting my unknown mileage injectors are clogged as my IPWs go pretty high . Ive changed a few things on the fuel system and everything was on its last leg and had massive build up and deposits. If this doesnt do it im removing my 300k cat.

god i cant wait to get rid of this motor and entire fuel system.

Have you tried running 93 octane to see if its false knock?

Those are def some good possibilities.

**Minno** · 04-15-2008

Yah, Lee weren't you having issues with your resonator as well? There are sooooo many possibilities in knock and the more mileage you have the more possibilities come into play haha.

**IndeedSS** · 04-15-2008

Originally Posted by Minno

Yah, Lee weren't you having issues with your resonator as well? There are sooooo many possibilities in knock and the more mileage you have the more possibilities come into play haha.

Yep Trannyman found the resonator to be too restrictive and was causing 6* of knock no matter the size pulley. He removed the resonator and removed the knock.

**Sabrewings** · 04-15-2008

Well, I have no resonator.

Today, I saw that at 40-45% throttle I was getting 0.3* then as I pushed a little harder it went to 1.5*. I am still on the stock tune, for the moment, so is this the "part throttle" KR that ZZP says their PCM gets rid of?