Re: Crank Trigger Ignition Curve

[Brad Sheridan <brads@mindspring.com>]

  I have been having to deal with this a bit(an understatement) at work.
Dynos like the Dynojet will work good to give you a base curve. But
sometimes, the curve that works best on the dyno is too radical a timing
curve in real life. So you may experience pinging while running the dyno
derived curve. Use the dyno curve as a baseline. A knock sensor that can
tell you if the curve is too much would be a great tool to use, I think J&S
makes one. This can tell you if you have too much advance on the dyno, and
on the track as well. The stuff I have been working with lately is all 2
stroke 125 and 250cc, so the curves are way different from what you are
looking at, but the concept is similar. 


At 09:11 PM 7/28/00 -0400, you wrote:

Does anyone out there have any experience setting an ignition curve on a
programmable ignition system?  I have a Holley Annihilator programmable
ignition on my car and want to program in the most aggressive curve I can
before I start getting pre-ignition.  I can set the advance every 500 RPM.
Right now I have base set as at 12 and reach a total of 38 degrees total by
3800 RPM.  The car is a Street Prepared Solo 2 car and rarely if ever sees
street use.  Does anyone out the have an Electramotive system or something
similar?
  
Any input would be appreciated
  
Alan Stamper
84' Scirocco (with small spare)
89' Wolfsburg 16V Jetta (driver)



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