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Originally Posted by themyst
@Shiv - Regarding the V5 beta maps, will the ignition advance parameter be re-scaled to accommodate the ability to advance ignition when conditions allow? e.g. meth/race.
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Absolutely. Expect the most aggressive meth/race gas maps to target ignition advance values 4-6 degrees greater than that of pump gas maps.
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@Cobb - In your Stage 1 OTS maps, are you changing the tables of any features not accessible by any piggyback? e.g. VANOS
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I'm not Rob, but we experimented with VANOS mapping (offsetting the cam position sensors) using what were unused digital i/o channels a couple years ago. Quite easy to do with piggbacks and stand-alones. Couldn't find any worthwhile gains. Other tuner's findings may differ, of course.
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One question went unanswered from all parties involved however; is it possible to monitor the knock activity of the hottest cylinder, which seems to be Cylinder 6? From my understanding, both piggies and even the AP are monitoring Cylinder 1 in their respective datalogs. After finding this bit of information out, I think many of us would feel a lot safer monitoring the hottest cylinder for knock activity.
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Just as a note, I have yet to see evidence that cylinder 6 is the most knock prone. Nor do I recall seeing any failed engine tear downs suggest this to be fact either. Besides that, we just use Ignition Advance on cylinder 1 as a general reference for tune aggression relative to the stock tune. Not as a specific value to apply a discrete offset upon. So not monitoring each individual cylinder for knock isn't necessary unless you have a "bad" cylinder. But I'd say the rattly noises, copious oil consumption, loss of power, smoky exhaust and various DME codes would probably be the first indicator of such a problem.