I've been doing a lot of research on knock, lspi, ignition correction ect. I've paid attention to 3 different tunes. I've had Cobb Stage 1, Cobb Stage 2, and now I'm on a DHM tune that we are wrapping up.
I have been extremely cautious about LSPI conditions, not WOT in 5th or 6th (actually not really more then maintenance or 20% throttle), going down to 4th for hard acceleration at highway speeds. But I still seem to get negative ignition correction & knock through all my tunes.
For instance, I was going up a grade today at a park, I was going about 20 mph and shifted into second gear gave about 1/4 throttle to slowly move up the hill, and saw -2 and up to -3.8 across all 4 cylinders. Is this really a condition that LSPI could occur, or is this a normal instance of what the ecu would do? I only had 1 cylinder viewing for knock and I only saw 1 knock in Cyl 3. Am I worrying too much about LSPI? I never go WOT under 2500 rpm.
This is low speed conditions only, my WOT logs are looking pretty good and Ron & I are wrapping up our tune. I never bog the engine, feel anything weird, or hear anything strange. The motor sounds great& i'm right at 8k miles. After doing more research on LSPI I tend to spend more time worrying about it as I drive then enjoying the car lol.
Mobil 1 full synthetic being changed every 3k miles. Good 91 shell gas, spark plugs are gapped correctly.
Here is a log of our latest revision of the tune if anyone is interested:
http://www.datazap.me/u/codestp202/d...13-16-17-18-19
I have been extremely cautious about LSPI conditions, not WOT in 5th or 6th (actually not really more then maintenance or 20% throttle), going down to 4th for hard acceleration at highway speeds. But I still seem to get negative ignition correction & knock through all my tunes.
For instance, I was going up a grade today at a park, I was going about 20 mph and shifted into second gear gave about 1/4 throttle to slowly move up the hill, and saw -2 and up to -3.8 across all 4 cylinders. Is this really a condition that LSPI could occur, or is this a normal instance of what the ecu would do? I only had 1 cylinder viewing for knock and I only saw 1 knock in Cyl 3. Am I worrying too much about LSPI? I never go WOT under 2500 rpm.
This is low speed conditions only, my WOT logs are looking pretty good and Ron & I are wrapping up our tune. I never bog the engine, feel anything weird, or hear anything strange. The motor sounds great& i'm right at 8k miles. After doing more research on LSPI I tend to spend more time worrying about it as I drive then enjoying the car lol.
Mobil 1 full synthetic being changed every 3k miles. Good 91 shell gas, spark plugs are gapped correctly.
Here is a log of our latest revision of the tune if anyone is interested:
http://www.datazap.me/u/codestp202/d...13-16-17-18-19
