5 star tuning

I have a '12 winnebago and added the 5 star. To me it was very good improvement. Mileage well it stays around 8-9. But performance and engine control is so much better. Does not wind up to 4-5K like it did stock and maintains the power better when going up hills etc. It will still drop to low mph on hard pulls such as wolf creek and a couple of others, in denver it held up so-so to the floor and 35 mph maybe 45. No more more high rpms when pushing into the passing gear zone. Kinda hard to really describe, but yes I recommend the thing.