Timing question

[itsafatboy]

So is there a coralation or a way to take map to tps , what I'm thinking is Daytona twintech has been doing ignition on carb bikes for long time and thier software has initial and slope to create timing maps would like to take those and change to tps since tmax really is a self adjusting afr tuner does great at that but timing is the tough one

Sure you can look at a ton of maps like I did and get a feel and implement it like I did and it works fine but would like to get it closer

Before Chris at Daytona passed away i think Chris been a few years and I'm old but I was talking to him he was coming up with a way to use the ion sensor for some full throttle runs that would set timing a one time thing you'd run , but then "Potty mouth" happened  .

Hope this isn't like a supper
Dumb question

[rigidthumper]

You can convert inches of mercury to KPA, or KPA to inches of mercury, using a calculator, like these.  LINK or LINK As far as MAP to TPS, no direct correlation, because you can hit various MAP loads @ the exact same throttle position. Hold the throttle at 20%; @ flat level cruise, may see 35-45 KPA, going up hill could see 60-80KPA yet start slowing, or going downhill see 15-20 KPA while speeding up.

[Jamie Long]

So is there a coralation or a way to take map to tps , what I'm thinking is Daytona twintech has been doing ignition on carb bikes for long time and thier software has initial and slope to create timing maps would like to take those and change to tps since tmax really is a self adjusting afr tuner does great at that but timing is the tough one

Sure you can look at a ton of maps like I did and get a feel and implement it like I did and it works fine but would like to get it closer

Before Chris at Daytona passed away i think Chris been a few years and I'm old but I was talking to him he was coming up with a way to use the ion sensor for some full throttle runs that would set timing a one time thing you'd run , but then "Potty mouth" happened  .

Hope this isn't like a supper
Dumb question

A short answer is TP is a static value; the position of the throttle blade. MAP is dynamic; absolute pressure in the intake manifold. MAP changes relative to load, regardless throttle position.
The graph below is a log of ignition timing, the left plot is RPM X TP the right plot RPM X MAP of the same data

[itsafatboy]

thanks i kind of figured there wasnt a way to cross those two, just was trying to understand a good timing slop for tps timing, and what im hearing is dyno with a good tuner is the only way i just wonder how they even get a good starting map 

[hrdtail78]

From Tmax.  There really isn't much differences in their starter maps when it comes to timing.  Best bet is to find one that has been tuned for the street by someone maybe on here and use that as a starter.

Tmax does a good job of hitting the AFR target.  They are hard to really dial in timing on a dyno because it is hard to duplicate road conditions or load on the bike.  With map based.  I am targeting based on load and can make sure I can get to areas plus some as one can get on the street.  The guys that have achieved a good state of tune with the Tmax have done it themselves by tinkering with it over miles and miles.

I did just recently hear a rumor that Tmax has figured out some anti knock stuff but it is a rumor.

[Jamie Long]

I did just recently hear a rumor that Tmax has figured out some anti knock stuff but it is a rumor.

No rumor. Tmax already features knock retard on their 24+ Gen2 Milwaukee-8 ECM, for Gen1 Milwaukee-8 Tmax knock retard will be added next firmware update.