Shift light and delivered timing...
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From: Commerce Twp, MI
Shift light and delivered timing... So I took the car up to 6600 rpm today and reviewed the log. It appears timing is starting to go nuts around 5600~5700 rpm. In my tune, I have timing set as follows in the high/low tables....
5200 - 28*
5600 - 28*
6000 - 29*
6400 - 29*
6800 - 30*
As you can see in the log, there's no knock retard. So I'm wondering what might be causing this. All I can think of is I recently installed a Harlan shift light, which had me splice into the rpm signal wire....and that the splice may be causing some interference. But I would think if that were true, I'd see it in the rpm log. Any ideas? I'm a little stumped...
5200 - 28*
5600 - 28*
6000 - 29*
6400 - 29*
6800 - 30*
As you can see in the log, there's no knock retard. So I'm wondering what might be causing this. All I can think of is I recently installed a Harlan shift light, which had me splice into the rpm signal wire....and that the splice may be causing some interference. But I would think if that were true, I'd see it in the rpm log. Any ideas? I'm a little stumped...
Thread Starter
TECH Addict
iTrader: (10)
Joined: Jun 2004
Posts: 2,918
Likes: 0
From: Commerce Twp, MI
Nevermind....think I figured it out. I think it was burst knock. I flashed a new tune this morning changing the burst knock delta air mass from the stock .02 to .05 and it seemed to cure the issue. 
