i would say yes to that, better driveability on the street, and a more robust charger. if you plan on pulling, maybe something like a 66/71/13ss would be a good combo, it will make power, and still be driveable on the street,or you could step up to like a S468, even more robust, i don't know the classes real well in pulling, not sure where the s468 would fall in the classes, but it is a streetable charger, and would do better in the flow department on the exhaust side.[/QUO
dosent a hx55 have a 68mm inducer?
honestly i don't know, im sure that info has been posted on this site before, what i was getting at is the s468 is a more robust charger, has a bigger shaft, and overall it can handle more abuse than the hx55 can, i don't think have enough finger's, and toes to count how many blown turbo's i have replaced on the ISM's that have the vgt version of the hx55, (He531ve i believe is the designation for that charger), i have done some of the older ISM's that have the HX55 charger on them, although they seem to last longer because they don't spin very hard, i think even on the higher rated older non egr ISM's, they only make about 28psi at rated power. im sure that there are better options out there for the guy that was looking at this charger, better options than even the S468, maybe someone from the pulling community can chime in on this subject....