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Old 03-03-2008, 07:38 PM   #2
Scooby Specialist
Member#: 136144
Join Date: Dec 2006
Chapter/Region: RMIC
Location: SLC, UT
2010 STi


Call them. That will be your best bet.

But to try to answer your questions, as far as I know, they both effect the mid/high end of the power band. The differences being just as the names imply; the mild grind will give a little less of a gain, but will run consistently with no other work. The hot grind will give you the best gain possible, but the idle will be a bit "lumpier" and you will have to raise your idle to avoid CEL's and stalling. When I get around to having mine done, I'm going for the hot. I'd rather get everything I can and take my chances with a lumpier idle. As far as price goes, I think it's like $95 per cam.
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