"5 star tuner" on a V-10?

Hank85713 wrote:
Yes I have one on my 2012 winnebago. It is actually a 2011 engine setup. I bought the rig and was dismally unsatisfied with its overall performance. If you like down shift with 4500-5000 rpms just to keep going then you dont need one. The 5star actually civilized the engine to make it enjoyable to drive. Gives a little better throttle control and actually seems to have help improve milage. Nothing the rave about abut seems to have helped .5 to 1 mpg depending on terrain. We put 4500 miles on ours this summer and it only went to the high rpms with the tuner a couple of time up in the colorado mountains. No CC involved, just mashing the pedal. we crossed over wolf creek was down to about 26mph nearing the crest, passed a struggling new dodge at 36 mph just before the crest. So overall yes I think it helped, but they can be expensive, bought mine last year during the christmas sale about $350 as I recall, could have been a little less.

I am looking to change out the muffler to a free flow gibson unit and will try to get a better air intake setup. Its all up to you, but I did what I did and am planning to make the other changes. And no the mfr's do not build except to pass government requirements. They leave much on the table that the aftermarket has taken the challenge to make your system perform better. Mufflers are a prime example they try to keep everything quiet for noise issues, same with the air intakes and as a result there are a lot of power losses in between. Go to one of the sites dealing with the V10 and ask there and then judge for yourself.