I don't know. I once had a"roots" blower that was very efficient.

I know I should stay away from Chinese blowers but I just can't stop myself.

Two lobe or 3 ? The latest 3 lobe kinda freaks me out. Call me old school.

Typically when my blower works hard for 10 minutes it ends up with lube sprayed on it's teeth.

I like your 3 lobe. My roots blowers looked more like these.

[ATTACH=CONFIG]535959[/ATTACH]

All show and no blow is a no go!

Okay, Now I understand your 'roots' comment.

This is the roots blower I've always wanted - minus the attitude.

Looks great hard anodized black.

Injection is nice, but I'd rather be blown.

Never shop for a new blower when the old blower is still around. Especially important do not take a new blower for a test ride even if you think the performance might be a little better, unless your are serious about changing your blower out. It will take years for the old blower to work right again along with many battles on things you wouldn't think mattered to the performance of the blower. In addition, even if you think everything is fixed and working properly with the old blower, it only takes some bad fuel to bring up the old problems again.

and then you find out the old blower is testing every input shaft in town to see which one is the biggest...AND installing all those input shafts in the output location. and she never let you install the input shaft back there!!!