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ignition map P8 computer

J

jr1967

Cruisin' Guzzisti
Joined
Oct 29, 2008
Messages
244
Does anyone have the ignition advance mapping data for a P8(Cali 1000i) computer?

I am looking for the data of TPS millivolts, advance degrees & rpm's.
It's for a project bike with Quota 1000 engine(44/37 valves) that I am converting to carbs. I know that California1000i had the same computer and I assume the same ignition map. I have been told that setting the TPS to full throttle will give me a useable ignition curve, but would like to be sure if that's the best solution(or setting the TPS at partial throttle opening) before I start re-jetting the carbs.

Another question that I asked before but the answers went missing when this site crashed: what is the best A/F ratio to shoot for when setting up the carbs?

Thanks, JR
 
Why do I even respond.....

I am very aware of different mappings in different Eproms, I do know the Quota mapping is odd but that's related to fueling, not ignition. Cali P8 should have the same ignition data. The difference is in the allocation of X, Y and Z axis.
Anyone with ignition map/TPS figures?
Thanks, JR
 
JR, contact me direct. I should have that data. Unrelated: I can also burn EPROMs for P8s and 1.6Ms.
 
Thanks Jon,
I'll keep that in mind. I thought I remembered 13.8 but I suppose that's too lean then....:( Apart from driveability, what afr is getting too close to melting pistons on an aircooled engine like ours?
JR
 
Since the combustion chamber and fuel atomization is never 100 effective, Stoichiometric or Theoretical Combustion is the ideal combustion process during which a fuel is burned completely, but with the design of guzzi and the other variables, a richer value always delivers more power on the dyno. 14.7 is the calculated nominal for non messed with gasoline, but it is way lean, 13.5 works good on guzzi's, you might squeeze a bit more out by leaning it a bit, but do so at your own peril
 
jurjenratsma wrote:
Does anyone have the ignition advance mapping data for a P8(Cali 1000i) computer?

I am looking for the data of TPS millivolts, advance degrees & rpm's.
It's for a project bike with Quota 1000 engine(44/37 valves) that I am converting to carbs. I know that California1000i had the same computer and I assume the same ignition map. I have been told that setting the TPS to full throttle will give me a useable ignition curve, but would like to be sure if that's the best solution(or setting the TPS at partial throttle opening) before I start re-jetting the carbs.

Thanks, JR
Click to expand...

Just re-starting this topic to see if some answers might come up!

Thanks, JR
 
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