Quote:
Originally Posted by ElTeeFauci
here is a sample datalog, and the ignition and fuel maps I've been using.
Using 550/720 injectors, all freshly rebuilt. walbro 255 fuel pump... haven't had any fuel issues to date.
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Your fuel injectors are too small.
You only have enough fuel injector capacity to handle about 270 - 280hp, if everything was tuned nicely.
By your datalog, your tune is still all over the place.
Look at the max pulsewidth - 89.4%.
As a rule of thumb, you're not supposed to go past 85%.
Anything over 85% will possibly lock up the fuel injector - basically > 85% is the same as 90%...95%...100%.
You ran out of fuel capacity.
This could be one reason why the engine let go.
Don't bother with the older S4 (rear) irons.
I've broken them on a customer's FC @ 320hp on a Dynapack dyno.
Replaced with an S5 (rear) iron, and it's doing 400+ reliably daily driver.
-Ted