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i got custumer with 03 6.0 with 130,000 miles ext cab long bed single wheel and got sct in it fuel pressure check and put fass fuel system on it still same problem as before stock fine you put chip on 60hp does it a little and when chip on 150 hp get ready bad motor breaks up about 2500 rpms and...

got 05 took to dealer and computer got lock from ford cant change Pcm with programer try bullly dog AND SCT nether work and one herd of this thank