Quote:
Originally Posted by Maxbumpo
If there is too much fuel for the air, it has a cooling affect, which reduces the heat of compression, which reduces efficiency, which means even less fuel is burned (kind of a down-ward spiral) so you get even more smoke and overall less power.
I need to do both of the same adjustments (ALDA and max RPM on the governor) on my '87 wagon with 3.5 liter pump.
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That actually does make sense. The reduction in coal-rolling is very marked after adjusting the ALDA. It will still let out a bit of smoke when really romping on it from a stop. I'm considering an extra 1/2 turn to lean it out a bit more still. It does definitely run a lot better now that it's been leaned out. Much quicker off the line and a much smoother transition into the boost band once the turbo spools. Before the adjustment, off-turbo was really a dog, then it would suddenly lurch into having some power once the turbo spooled. Going up a hill in slow traffic was pretty embarrassing.