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Variables to log

Posted: Thu May 29, 2008 8:23 am
by RFischer
I have an '06 SRT8 running the Diablo Perf 93 tune. I normally use Sunoco 94 gas. I went to Cayuga Ontario to take the car on the track. The town only has 91 as their highest octane so I used an Octane booster. I had 1/2 a tank with 94, 1/2 tank with 91 and 1 bottle of Octane boost, so I'm not sure what the exact octane numbner was. Anyways...
I was on the lapping track the other day and was monitoring a few variables. Some of them were:
* rpm
* mph
knk LT Retard
*knk ST retard
knk total retard
knk sensor 1
knk sensor 2
PCT PDL Percent
actual spark
* spark adj
* = what in the attachment
Questions:
1) what are the limits I should be concerned about regarding knock and spark adjust?
2) are these the key variables I should be monitoring, or should I be aware of other items?
I added fuel to the WOT tables and increased my mph capability on the frist straight away part of the lap from about 95-100 to 105-110. I tried Spark adjustments but backed them out since I wasn't sure what I was looking for in term of the variable to measure.
I'd like to make similar runs with the 94 and was hoping to get some further insight.
Thanks.

RE: Variables to log

Posted: Thu May 29, 2008 8:45 am
by johan
Main thing to log would be your actual spark and your st and lt knock.
You do not want ANY lt knock.
Acceptable st knock would be anything under 3 deg, usually happens at peak torque, 4-5k, anything more than that i would adjust fuel and or timing depending on your prior adjustments.
If you are serious about dialing it in you really need a wideband a/f monitor to properly dial your a/f in, the a/f pid used is not very accurate.

RE: Variables to log

Posted: Mon Jun 02, 2008 10:58 pm
by RFischer
Does the Innovate LM1 work with the Diablo tuner yet?

RE: Variables to log

Posted: Tue Jun 03, 2008 8:20 am
by johnc
The word from Innovate is that It does in LW3, but that version has not been officially released yet.