Quote:
Originally Posted by Kronix
Jamie, I thought that when you change pulleys you have to retune it, am I incorrect? I'm running the stock 3.8 @ 6psi, but was thinking about dropping down to a 3.3 or 3.4. I've seen a few posts about people swapping out the pulley in an afternoon, but never mention of retuning. 
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You will want to get it retuned when ever you change your boost level.
What boost level are you wanting to get to? With the 3.8" and the OD cogs, I'm at 9.5#'s with ZERO chance of belt slip.