on my list of things to get is the apexi vafc controller.a friend of mine has one on his b16 crx and showed me that you can drop vtec engagement all the way down to 3000rpm.i have a b16a in my 91 hb and i was wndering if i was to get my vafc controller and set vtec at 3k would it harm anything? is it something that should only be tuned before a race? what are the ill effects that it would cause? little help