i have a 04 4.7 ltr and i had to upgrade to the 20's and with this , my speedometer is 3-4 mph off. is there something the dealer can flash/change? or do i have to buy that $300 econ programmer? the only performance chip they list for my 04 4.7 is the jet performance chip and i already have it so i reg performance chip is not going to do it....any suggestions?

 

The dealer can do it for probably about 1hr. labor charge.

 

superchips has a tirepaq which costs $225. thats cheaper than the one your talking about, but the dealer should be able to do it. 1 hour labor sounds ridiculous to me. it takes no more than a few minutes to do. i think i read on here a guy doing it and they charged him $45.

 

I said an hour becaus ethat is the minimum charge at many dealerships. Yeah, it only takes about 15 minutes.

 

thanks for the help you guys , thats what i need to know. looks like ill be taking it in, ill laugh if they try and charge 4 hours labor or some bull**** , i hate bringing it to dealerships. but for this kind of problem thats about your only choice. thanks

 

Are you sure your Speedo is off? Some Rams come stock with 20's and they are fine... it all depends on teh actual size of the tire... So as long as your tires are the same size as other Rams then you should'nt need to have your truck recalibrated... What size tires do you run?

 

lol well the way i figured it out was everytime i run by police radars im always off the same amount of mph. right now i believe 275 60 r 20 . not sure if much of a difference , but i think maybe a little as far as the tire size.

 

did you notice any differences after getting that jet chip or not really worth it?

 

not too much .....i thinks its cause i have a manual trans. but people with auto's say they notice a diff with the jet chip because its shift at a higher rpm thats about it though.