Ignition timing - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 5 Old 07-11-2008, 12:26 PM Thread Starter
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Ignition timing

Didn't find much about any farkle that can advance timing. I presume, given the tame powerband and octane requirement, coupled to the usual emissions restrictions, that Vee and Wee timing are quite conservative. Would have thought the power junkies would have messed with this by now. What have I missed?
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post #2 of 5 Old 07-11-2008, 10:43 PM
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Jim,
I belive Power Commander makes a ignition control box that works with the PCIII which would let one adjust the timing curve.


Rich

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- 1972 XS 650 (Yamaha)
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post #3 of 5 Old 07-12-2008, 12:34 PM
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Yeah but I've never heard of anybody using higher octane fuel and advancing the timing to get more power. Power really comes from getting more air through the system and combining it with the proper amount of fuel.

Pat- 2007 DL650A was ridden to all 48 contiguous states. I didn't quite make it to 17,000 miles on the 2012 DL650A.
Nicknames I use to lessen typing, Vee = 2002-2012 DL1000s. Vee2=2014-2016 DL1000s. Wee = 2004-2011 DL650s. Glee = 2012-2016 DL650s
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post #4 of 5 Old 07-15-2008, 07:47 AM Thread Starter
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Back in the day

In the early '70's, when emission controls were wreaking havoc on engine performance, manufacturers regularly ran engines severely retarded to cut down on NoX emissions (pre -cat-con). Power, torque, and driveability were all improved when the timing got put back where it belonged, although the car no longer met emission regs. Common to back off the timing on big nasty 2-strokes (like my old YZ-490) to smooth out the power a bit. Admittedly, pumping efficiency sets an upper limit on how much power you can get, but optimizing timing improves combustion pressure, which affects torque/horsepower. In a large combustion chamber (liter-class twin) detonation is going to be an issue, so more octane would allow for advancing the timing a couple of degrees more. Was more curious if anyone had checked it out to see if there was any potential there. Personally I'm happy with the stock power curve.
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post #5 of 5 Old 07-15-2008, 08:39 AM
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