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Any recommendations for a competent Cummins shop to perform a "performance" tuneup on a first generation engine? I've checked with the Cummins shop in west Sac, but they seem VERY resistant to do any adjustments to the engine in variance from the book... I've added the stuff noted below in my sig, and made minor adjustment to the injector pump as specified by Banks - but have no doubt that a knowledgeable shop could improve performance substantially above what I now obtain - I've never had anything more than a couple of valve adjustments done in over 106,000 miles...
Any help?
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Early '91 250, 727 AT, 307 rear... Banks Stinger exhaust, intercooler... US Gear OD... MORE than a match for every new PS Ford encountered so far...
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