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slight power pulse at full throttle

564 views 0 replies 1 participant last post by  dieseldavem 
#1 ·
OK folks, I've had +20K miles of trouble free operation since completion of the basic 6.0 mods ( head studs and gaskets, EGR delete, exhaust, SCT tuner). I used the truck (05 Excursion) last week to tow an equipment trailer with 9,000 lbs about 300 miles with no problems. After the 1st 150 miles, I disconnected the trailer and while sporting around town, noticed a pulsation in power only while under full throttle. I hooked up the equipment trailer yesterday and towed at highway speeds in the hills of NC with no problems. I have no DTC codes or other indicators (ex. air filter indicator) of problems. Any ideas on where to start with troubleshooting?
 
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