Both ford and my GMC had the same done to them. Air intake 4" exhaust Supper tuner programer 115 hp (ford) and a PPE Tuner on the GMC. I also did the fuel rail shims because I was getting a low fuel pressure code. I have a boost controler on the GMC. My ford had 410 gears and both trucks have...
I was thinking of changing my gears to a 410. Hate to say it but my 02 ford would out pull my 06 gmc. Any feed back would be helpful. Im hoping it would increse my mileage and make my trans a little happier