i got my PS super 66 that i bought from Doug at ADT installed on tues night, with about 100 miles or so on the turbo i can safely say that this thing is everything that Doug and Brady said it would be. truck mods are 370's, 100 plate, timing at 19, EEP custom pistons, race cam all backed by a DTT billet auto with an 89% tc. this turbo id completely different than my old pdr 40 (which was a good turbo, but wouldnt handle all the fuel) with the 40 i could easily hit 1350 (still climbing) at 65 mph, the 40 had a def dead spot of lag at low rpms. with the 66 there is no dead spot it does spool at low rpms and the truck does pick up speed but at 8-10 lbs this thing lights and the boost gauge is at 45 (max so far) in the blink of an eye, it is wild. now for the one down fall, which is not a big deal. the comp surge is not a big deal, the truck wont do it to me, i have to make it surge. this is the only way that i can get it to surge. in OD at low rpms about 55-60 roll hard on the throttle and it is fine, pulls real hard and at about 30 lbs it starts to surge, now it you let up and roll back into it it is fine bc once you get above about 1900 rpms it runs fast and hard. there is only about 100-150 rpm range that you have to think about. now to easily drive around the surge and make the truck go even faster, is to unlock the TC if you are going to accelerate hard or drop it down to 3rd (which is prob better for the trans anyway) and get the rpms up and then hit OD it absolutely flys. Doug has told me about thie turbo since jan and it is everything that he has ever said and after talking to brady the charger has lived up to everything that he has said also. in my opinion it is one mean turbo and it really woke my truck up. it is nice being able to break the tires free in OD doing 60mph. i highly recomend this charger to anyone with some extra fuel to burn, give ADT or Industrial Injection a call and order one of these turbos. i went with the 66 instead of going to twins simply goign on what Doug C. told me about it, and i dont regret it a bit.