04.5-10 GM 2500, 3500HD 6.6L Duramax BD Screamer 65MM Turbo 1045840

This turbo needs an honest review because I couldn't find much when purchasing. Been running for a week now. Giving 5 stars because this unit is working flawlessly and impressively. Of course, tuning is everything when it comes to results, but here is what I found with this turbo compared to stock. Low end spool up is almost right there with stock. Then it comes in with a way strong mid-range punch and then keeps pulling up top where the factory turbo already tapped out. On my max effort tune the duals break loose without hesitation now. I often use fuel mpg as a gauge for efficiency, I can say so far I have gained a solid 1.5-2mpg with this turbo alone. I know other guys that immediately lost at least that much moving to larger sized turbos. Possibly a benefit of the mixed flow turbine design? One thing for some to know before buying, this is a 13 blade turbine which is why the low end spool is so strong, but if your just looking for the fighter jet sound then buy a 10 blade. This turbo has almost no exhaust whistle, that being said, with a 5" straight pipe, it has one of the meanest all engine roars and rumbles I have heard from a Duramax...Awesome! Well done BD.