2 friends of mine tryed the tweeler. They both are Ford mechanics and nerds to boot. They said it sucked. Blew a bunch of head gaskets trying to get it right. The head guy at the tweeker place said he had no idea and refunded their money. The problem with the tweeker is that it doesn't know when boost is there and when it isn't. Thats why I like the PMS. Very easy to use and they are cheap to find used.
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old S trim combo 10.13@ 135
New YS combo = 680RWHP (no times)
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