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Discussion Starter · #1 ·
Finally I got a map tuned with the right ignition timing and fuel mixture.

Now I would like some advice to have a good tune with a 50/50 mixture.

Question 1 :

Would water only or a 50/50 mixture need more ignition timing ?

Question 2 :

Methanol is fuel, so the map needs to be leaned out. By how much? is there a formula for this ?

Question 3 :

Water cools combustion more than methanol but if both injected there is a note that water nor methanol do not "see" each other thus mix more with air.

So what about Air Temps? Would using a 50/50 mixture gain cooler air temperatures but increased cylinder temperatures due to methanol burning?
 

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Finally I got a map tuned with the right ignition timing and fuel mixture.

Now I would like some advice to have a good tune with a 50/50 mixture.

Question 1 :

Would water only or a 50/50 mixture need more ignition timing ?

Question 2 :

Methanol is fuel, so the map needs to be leaned out. By how much? is there a formula for this ?

Question 3 :

Water cools combustion more than methanol but if both injected there is a note that water nor methanol do not "see" each other thus mix more with air.

So what about Air Temps? Would using a 50/50 mixture gain cooler air temperatures but increased cylinder temperatures due to methanol burning?
There is no right answer, you will have to find out with dyno time.
 
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