I was thinking about getting the DP tuner and 4" exhaust, possibly 80 economy mode and maybe the 120 or the 140 for the fun times and maybe track once or twice, while I'm still trying to read up more on it, where is the cheapest, best place to get them?

What is the difference between the 80 economy and 80 tow? Shifting points? I only tow regular cars and light SUVs would a tow 80 benefit me or 80 Econ will be just fine?

 

Sorry wrong section

 

i would not bother with the 120 or 140 extreme tune.
my 02 has better times in 80E tune than in 120.
the only thing 120 extreme tune on a basically stock truck is good for is blowing black smoke.

and i will move this to the proper forum for you.