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Message: <blockquote data-quote="mikey94gt" data-source="post: 772529" data-attributes="member: 11136">14btdc will work great.dont run anything else than stock fuel pressure, the computer will go nuts.I just laid mine inside the hole that the fender has from the factory. you can cut a rubber fuel hose in half and put it on the edge of the metal, if you dont want rattles.MAC makes a GT40P head swap header. also, Ford Racing has a set of Ceramic coated ones that will work too.the spout chip takes timing control from the ECU (engine control unit) so you can set base timing, the 14btdc you are speaking of.sounds like you might need a little computer tuning, the computer doesnt wanna run with your combo. check your throttle position sensor voltage, should be .96v key on, engine off, and .98v engine running.</blockquote>