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Old 05-29-2013, 06:57 AM
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very poor MPG IMO... possible causes

So i bought this supercrew short bed 4X4 because it figured id get similar MPG as my 99 extended cab long bed. Boy was i wrong. went on a trip to Corpus Christi from san antonio and averaged about 14 MPG highway!!!

compared to the other truck which consistently has given me 19-20 on the same trip.

tires are toyo- open country, suspension is all stock.

the truck has AFE stage 2 intake and was on bully dog street tune, same as the other truck.

the only difference ive noticed is even after alignment this truck shakes a bit when you get to almost 40 mph, and slowly the vibration goes away at higher speeds. also at idle this truck sounds a bit lopey at times, not smooth like the other truck...

any help? thinking about selling this truck already.
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Old 06-04-2013, 11:17 AM
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id say oil or fuel pressure could be the causes of the romps.
pull the ICP sensor see if theirs oil coming through.
then possibly IPR.
lastly check fuel pressure.
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Old 06-07-2013, 05:33 PM
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exhuast back pressure sensore and tube

maybe your bearings are bad, causing drag?

does it have the same gears as the last truck? did the rpms seem high?

that sucks man i get 12-13 but im pushing 38's,

i dunno about the tuner, could be part of the problem, ive never heard anything good about bullydog
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