Coming Soon - Dyno shoot out, Full FMF w Megabomb VS Stock Header and DG-R
Senior Member
1st Gear Member
Joined: Mar 2013
Posts: 866
From: SE Asia
I've only just now read the entire thread with Bernie's assertion about re-setting the initial advance on the ignition. I figured the ignition issue had been put to rest long ago with RayCour's testing of his CDI unit... Then Ray postulates that his testing could have been less than definitive on his unit... Guess I'll need to get one of his CDI units and Dyno test it one day.. It never ends..lol
The goal is to have peak combustion pressure occur at 17 degrees past TDC, any sooner or later and efficiency/power drops off.
From my experiences an extra 2 degrees of ignition timing on a stock XR200 when running premium helps but with a 11:1 compression ratio you can't run more than stock timing without race gas.
So to me 10 degrees is way too much additional advance and the claims made for the KLX250 don't sound rational.
I was tempted to pull the eBay trigger on a CDI unit the other day after Bernie's initial post but there aren't any 07 units for sale there now anyway.
We can always wait and see if Ray tries again on a smaller dyno.
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Senior Member
Joined: Jun 2013
Posts: 3,314
From: North Texas
1st Gear Member
Dyno shop was closed when I went back over to test the bike. I'm back at work - out in the oil field - and will have to wait until I get some time off to finish the testing... Sorry...
I assure you that I will get this done and post a full report.
I assure you that I will get this done and post a full report.
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