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installed msd-btm this weekend (this one)...
Posted by kooch (more from kooch) on Mon, 23 Apr 2001 02:28:48
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couple comments and a couple questions. first, trying to figure out what the big difference should be. i mean, acceleration feels smoother, but almost feels less in the seat-of-pants test. maybe smoother acceleration rounds out the harshness of the turbo grabbing hold and yanking. before the install, i was running 15-16 psi before knock and then bouncing back to 10-11psi and so forth. now, it runs up to 18-19psi and holds solid. but, it doesn't really feel any more powerful. wasn't really able to do acurate timing adjustment (no light), but it was set to 16 btdc a couple weeks ago so i marked the dist and rotated a little.
question is: do i need the stock dist vacuum advance any more? (can i just plug it off?) will i still get a 5 degree dump at 1-3 psi? anyway around that? it seems as though i can advance it wuite a bit now and then just rely on the btm to retard enough to prevent knock. what should timing be set to?
p.s read kevin k's suggestions on jeff's site, but want more info if available.
thanks.
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