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View Full Version : Things i should do first!



RipCord
04-05-2007, 21:06
I just purchased a 2005 gmc 3500 with a 6.6 lly crew cab long bed, the computer says its average fuel economy is 11.1. the truck has 102K miles on it.that kinda blows , whats the best performance parts i can put on it to make the motor come alive?. whats the best? banks, bullydog,hyper tech???

JeepSJ
04-06-2007, 00:13
First thing...gauges, especially EGT. Then add the power parts.

Mitchagain
04-08-2007, 19:11
2x....then flow-through muffler....then power adders

JohnC
04-09-2007, 16:41
First check the mileage by hand. There are many reasons why the DIC can be wrong. Also, confirm the odometer is correct.