Quote:
Originally Posted by biggy238
I don't doubt at all, but why are manufacturer based engines (my kitty cats) using the cam so heavily?
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First thing that pops into my head is the
Cat isn't likely reving 5k or better, BUT not saying it couldn't be done just with a Cam sensor either but the resolution is pretty low in the Cummins example. In that case it's only 13 points if my memory serves me per cycle and the crank would make 2 rev's so thats 124 points per cycle. Just considerable more resolution.
Quote:
Originally Posted by Bodacious
lol, I'm gonna get pummeled for sure if I can't figure this stuff out. lol Forgive my ignorance, what does MAP stand for? lol See, I told you all I didn't know anything about this stuff. lol
What all do I need to get to the MAP based fueling?
If I get everything hooked up and ready, can I get ya to come out help me with it??? I'm serious here. I'd rather pay someone who's been there to save blowing the thing up on start-up.
Edit: I just held the curser over the green map and it told me 'Manifold Absolute Pressure'. lol Damn I'm get'n sharper!! lol
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Think of it as your AFC on a mechanical setup. Maximum torque during the boost curve with be close to Stoich. If you care about smoke then you need to be under that, if its a non issue your running just about dead on or a little more.
If you tune to
MAP and
IAT then your fuel curve will match the air curve and make the most power possible. Even on a puller if your IAT's climb ideally you would pull a little fuel to compensate and I see it on my own testing on the dyno.
Honestly a factory Cummin's ecm as a stand alone is going to get 95% of the guys out there. Really don't need a dedicated aftermarket stand alone till you want to be in 95%+.
I'm trying to stay out of the custom tuning game, just don't have the time to invest.