I added a 70mm turbo on my 4.6 sohc and changed the dtock injectors to 47 lb. and a 340 pump...Since the install ive had issues with intermittent misses at idle and during driving, it will miss like crazy then clear up. It will also bust out in the top end like its starving for fuel.. ive changed spark plugs, coil packs, cleaned gas tank, and replaced filter. Can anyone shed some light on this issue? Im wondering if something wrong with the pump, or if i need to run a dual pump set up like the gt 500...