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Spesh

AlphaN/TPS derived maps

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Spesh

Does anyone (petert :p) have any tps based ignition/afr/ve map examples please?  

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petert

TPS VE fuel map from my 205. Some cells have never been tuned however.

205 TPS Fuel Map.png

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wicked

Do you have your ignition also on alpha-N or on MAP?

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petert
9 hours ago, wicked said:

Do you have your ignition also on alpha-N or on MAP?

Here's the ignition map from the same engine, MAP sensor. Again, some cells have never been tuned.

205 MAP Ignition Map.png

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petert

I'd only use those maps as starting points, particularly the fuel. If you don't have the same size injectors is sort of meaningless. The important point with the fuel is to set up the load points logarithmically, as the flow past the butterfly isn't linear with rotation.  Thus, 1,3,7, 15% etc. You could eliminate the intermediate RPM points and just map every 500 to start with. The only difficult area is when it comes on the cam around 5250. Notice the big jump to 5500 at 100% throttle.

 

The ignition map would be very safe with most NA engines, as this engine is 12:1.

Edited by petert

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wicked
2 hours ago, petert said:

The ignition map would be very safe with most NA engines, as this engine is 12:1.

That's good, I'll only need it to get it up and running before going to rolling road. 

 

Tnx!

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