are you talking housing or black box? if you replaced your stock metal honeycomb then yes, your going to ruin you engine unless you have a way of tuning. The black box used as a replacement for your kvafm (i.e my old one busted.) is acceptable and should not affect your daily driving. granted you wired it in correctly..
Last edited by Green7mgte; 02-16-2012 at 12:40 PM.
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