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Message: [QUOTE="golfer, post: 64284, member: 266"] how many miles on the engine? fuel pressure results? [URL="http://www.swampsdiesel.com/content/faq/fuelpress.htm"]Fuel Psi test[/URL] "runs the same with or w/o TS chip" suggests that either the chip isn't installed correctly...or there is a major boost leak, exhaust leak(up-pipes/manifolds), or inj problem if you have a scantool (not a code reader)..see what the value is for [U]manifold gauge pressure[/U] on a hard run, 50-80mph @ WOT. if the PCM/chip isn't "seeing" any decent amount of boost...then the PCM/chip will not give you any extra fuel...boost & fuel are like the chicken and the egg..gotta have fuel to make boost...but the PCM needs to see that boost (through the MAP sensor) to 'give' you more fuel.. definitely sounds like ragged ass though...and isn't firing on 8 cyls...(no SES/CEL only means that the injs are physically plugged in...not that they are all good, obviously) any significant amount of oil consumption? how does the compressor wheel in the turbo inlet look? (chewed up/abraded/sand blasted?) [/QUOTE]

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