Did you know?
 

Speed density AKA map sensors do not work with 2-strokes. Isn't that just wonderful? :(

Re: Did you know?
 

thats so sad :(

Re: Did you know?
 

ok. why dont they work?

Re: Did you know?
 

Ya why not?

Re: Did you know?
 

Well since you asked little jimmy, becuase of the resonance properties of a 2-stroke motor, a map sensor becomes worthless. Here's a datalog maybe it'll make sense:

http://www.ncs-stl.com/xp/MapGraph.JPG



Unlike a 4-stroke air goes back into the intake manifold and pressurizes it. So measuring the pressure won't work since its not always under constant vaccumm when running. Whitey is not happy.

Re: Did you know?
 

Whitey got owned.
Now what Dr. Whitey?

Re: Did you know?
 

reed vavles and piston ports= terable vacume signals :P

Re: Did you know?
 

Onto the wonderful world of MAF. ;)


Anyone got a Ford MAF?

Re: Did you know?
 

what are u using to run the show?
megasquirt?

Re: Did you know?
 

your going to try and calibrate it with a heated wire sensor? you are better man that I if you can pull it off, good luck