ECM Rollback

[daston]

So I'm going to buy a ECM and have PHP do a rollback, but was wondering about the custom tune they can do as well. I tow a 34 ft fifth wheel, but the truck is my daily driver too. What tune should I do? The reason I want to buy another ecm besides the one that's in the truck is for smog issue's here in cali. Plus the truck is still under full warrenty. The dealer flashed a smog code into my truck and now I have very limited power. The fifth wheel is about 10K in weight.

25hp Extremely Heavy, Tow 40hp Heavy Tow, 65hp Moderate Tow, 80hp Light Tow, 65hp Daily Driver ,80hp Daily Driver ,65hp Performance, 80hp Performance.

Any advise?