Diesel Freak Cat Fixed Fuel Saver HarnessQUESTION: How do they work? ANSWER: There is a fuel temp harness that you plug in between your fuel temp sensor and your wiring. That will advance the timing on your engine. The second harness plugs into your boost pressure sensor and alters the fuel rate to the motor. You can have that fixed or adjustable. QUESTION: Will these harnesses effect the longevity or reliability of my engine? ANSWER: No. We have never experienced an ill effect by running
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