supra5677
Pro
Posts: 1279
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posted July 06, 2007 06:43 AM
To Engine Builders/Tuners need help..
Ok I finally clicked the right button on the mouse and loaded the definitions to Enginuity Software  Cool and Bitchin.. Now as far as ignition timing I need some help. I saw someone run this combination
1270 kit 105/100 lobe centers 2.5 degrees ignition 202 hp at 11,600
and then slightly different lobe centers 5 degrees of advance 192 hp at 10,600
I want the bike to make peak power at 12,200 where my new limiter is but still have the low and midrange. The GREAT thing about the software is that I can change the ignition timing everywhere..
I saw another posting where someone said leave the igntion advance in up to 10,00rpm and then retard the timing.. this was on l.a. busas.. Before I make any changes I want to know how the bike is going to respond to ignition changes in the map. Has anybody dynoed the bike with different ignition settings?
Question with the manual advance rotor does it add timing to the numbers already in the map? If this is true some areas would be overly advanced.. So Y2K, DM any bodies help would be greatly appreciated. I also am waiting from RR to find out speed as the ECU relates to timing and fuel. Thanks
   
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dougmeyer
Needs a job
moderated
Posts: 2713
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posted July 06, 2007 09:19 AM
The manual advance rotor is additive to the advance put in by the ECU.
Why don't you start plugging in some numbers and see what happens? That's the beauty of your simulation software you can make mistakes and not blow things up. It doesn't sound as cool, though.
Generally speaking you need less ignition lead at higher rpm, but not always. It depends on your VE, rod ratios, and rod length (this can be a big one), fuel burn rate and chamber design.
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supra5677
Pro
Posts: 1279
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posted July 06, 2007 02:05 PM
ok thanks..
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supra5677
Pro
Posts: 1279
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posted July 06, 2007 02:34 PM
I don't have simulation software. I can only see the fruit of my changes AFTER I download it into the bike.. The Factory EC dyno can find the correct ignition advance looks like i'm going to have to break down and spend $700.00
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