The model # on it is VZ21. A direct knock off of an IHI RHB31 as far as i can tell identical specs.. actually thought i was buying the IHI when i ordered it, but i didn't read the fine print- what do you expect on the fleBay? The IHI RHB31 is made primarily for application in a japanese car, a Seiko 650. The engine is 650cc, which is why i thought it would be a great fit for my bike. THe seiko use the turbo more for gas mileage, but also to get a bit of power out of such a tiny car.. I could probably get higher peak hp out of a bigger turbo at a higher rpm, but i figure this little guy will spool up almost immediately, which will be nice for just tooling the corners. To that end, I will only be running about 8 pounds of boost. The wastegate is a pressed together sealed job with an internal spring set up for a bar of boost (14psi). I will buy a different wastegate for a lower threshold and replace the entire assembly. I could also get one of the adjustable setups, which would be cool cause i could mess with the waste threshold from about 5psi up to a bar. Right now the wastegate's setup strictly for 14psi, however, and will need to be replaced.