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  1. Fuel Injection Tuning
    I recently got a new big gun dual exhaust, put on and ran great for a day. next day took her for a ride and at the end of my ride there was a slight bog in 3rd gear revving at 6-7k rpms from going up a hill. quickly went back to my trailer because i knew something wasn't right. i let her idol...
  2. General 660 Discussion
    Ok, 04 Raptor that didn't run. Replaced main switch, got power, replaced all fluids, ran like shit and backfired like a machine gun. Didn't get over 5mph. Tore the engine apart, discovered broken exhaust valve spring. Replaced it. Adjusted the valves, etc. Got it all back together. Now it...