Quote:
Originally posted by 1BAD302
Im guessing your not going to get 20hp from CAI and underdrives, maybe 10 if your lucky. The CAI look way better but im not sure if they are worth the extra money. Underdrives will riddle you with battery and alternator problems from what i have heard on this site so i decided to avoid them personally.
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the only probs I have had with the pullies is when you have your lights on heat/air and stopped at a light your gauges reads low but once you start moving you are fine and all it has done to me is cause the lights to dim at low motor speeds (sitting at a light ) but if your into the big systems then all you have to do is upgrade your alternator which you should do anyway without the underdrives and a big system in the pre94 mustangs cause those ones just suck
you never said what yr car you have