Whats the best handheld tuner for use with towing on a 04 suburban, Ill be towing a 6500 lb camper, Its stock except for a k&n filter, also what are some suggestions for getting more towing power without major changes, this is the wifes daily driver and she doesnt want to hear a loud exhaust etc, is there a free flowing exhaust that is also low in decibels ? is there a mild cam for towing? Over all i dont want to affect the gas mileage any worse

also what are some other mods i can do to optimize towing and fuel econmy

 

I would not get a hand held tuner, I would go with a Black Bear Performance tune. They are a sponsor of the site, also the link is in my sig.

 

well its a daily driver and i cant afford the downtime of a mail order tune, and i want to be able to switch between a tow tune and a daily tune to conserve gas

 

you can send your pcm back to him once he sends you a new one.
You will be wasting money if you get a handheld and the only thing that really conserves gas is your right foot.

I would second the Blackbear tune.