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Old 12-14-2005, 08:38 PM   #7
Element Tuning
Former Vendor
Member#: 54918
Join Date: Feb 2004
Chapter/Region: MAIC
Location: Gaithersburg, MD
673 WHP Element
Tuning Pro Comp Engine


Originally Posted by ride5000
jeff, do you have these new sti coil packs?

phil, lowering dwell reduces conduction angle, correct?

and this will reduce spark energy, correct?

I don't know the answer to your question as it pertains to conduction angle. I do know that the older coil packs could take up to 5 ms total dwell without much trouble but the newer coil pack are happier with 3-4 ms of total dwell time. Whatís important to remember is that you only need enough dwell time to fully charge a given coil. Adding more time doesnít necessarily benefit anything and in fact I usually find it can burn out coil packs and cause misfires. Why the misfires? Iím not 100% positive if this is due to overheating or possible spark jumping. I can tell you with conviction that I have not lost power by reducing the dwell times of the STI as I have tested the lower settings on the dyno. We usually make more power because it stops misfiring.

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