Just Wondering if anyone uses an RPM Extender...or would you recommend going with a custom chip that would extend the stock RPM rev limit??...I forgot to mention...its for my 1990 Mustang with a DSS 331 stroker...I do have a MSD 6AL installed with a 7000rpm chip..but the stock PCM seems to be cutting in before 7000...I'm guessing around 6250 where it is set at..Anyone have any ideas??[/align]
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