power help please
#1
power help please
I,m posting for a friend that has just bought a 04 durmax with a 6.6 and wants to do some power upgrades that won,t hurt the tranny exhaust is the first then gauges. Does any body have an idea for a good programmer or tuner box that best fits this truck, will be doing some light trailer towing with this truck thanks for any help you can give. P S a four speed auto trany thank you
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