KR AT HIGH SPEED & HIGH RPMs
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Teching In
Joined: May 2011
Posts: 35
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From: istanbul / Turkey
KR AT HIGH SPEED & HIGH RPMs Hi Guys!
Seems that i've sorted out many issues with my LS1 & 4L60E swapped 1974 Pontiac Firebird.
The car has 1 1/78 LongTubes , Fast 92 intake with 92mm TB, 3inch tubes with X Pipe
(My Trick Flow 220 CNC heads are still at my garage)
Currently I'm running MAFless but i hope soon i will reengage it.
My problem is that i'm seeing knock (which i degraded sensitivity)
As far as i see my Commanded AFR and Current AFR do not match.
BUT I DON'T KNOW HOW TO LEAN OUT THIS RICH CONDITION!
Guys, this is my final step. I'll be more than appreciated if someone can just show me how to match my Commanded AFR to my Running AFR.
How can i lean the wot out?
Thanks in advance.
Seems that i've sorted out many issues with my LS1 & 4L60E swapped 1974 Pontiac Firebird.
The car has 1 1/78 LongTubes , Fast 92 intake with 92mm TB, 3inch tubes with X Pipe
(My Trick Flow 220 CNC heads are still at my garage)
Currently I'm running MAFless but i hope soon i will reengage it.
My problem is that i'm seeing knock (which i degraded sensitivity)
As far as i see my Commanded AFR and Current AFR do not match.
BUT I DON'T KNOW HOW TO LEAN OUT THIS RICH CONDITION!
Guys, this is my final step. I'll be more than appreciated if someone can just show me how to match my Commanded AFR to my Running AFR.
How can i lean the wot out?
Thanks in advance.
Well, you have to set up a graph to show you error.
The parameter would be EQ Ratio Error (Math) and select A/F or Lambda. Since you have your wideband setup on A/F, just select A/F 14.7 Stoich for gas.
Then the column would be Engine Speed and copy the values of 400 800 1200 etc.
Row would be Manifold Absolute Pressure and the values are whatever you run. I use kPa there so it's 5 10 15 etc.
And then you make sure you log the EQ Ratio error in the channels. And when you hit WOT and you go rich, it'll tell you you're off by 3-4% in these cells. And you can copy and multiply % into your VE table and correct it. I didn't see that in your log - but it looks like you've done that on the VE table (it looks rough).
As far as the KR goes, you should back off the timing a bit. Try 25 degrees in the higher cell mass areas above .60g.
The parameter would be EQ Ratio Error (Math) and select A/F or Lambda. Since you have your wideband setup on A/F, just select A/F 14.7 Stoich for gas.
Then the column would be Engine Speed and copy the values of 400 800 1200 etc.
Row would be Manifold Absolute Pressure and the values are whatever you run. I use kPa there so it's 5 10 15 etc.
And then you make sure you log the EQ Ratio error in the channels. And when you hit WOT and you go rich, it'll tell you you're off by 3-4% in these cells. And you can copy and multiply % into your VE table and correct it. I didn't see that in your log - but it looks like you've done that on the VE table (it looks rough).
As far as the KR goes, you should back off the timing a bit. Try 25 degrees in the higher cell mass areas above .60g.
