Yep, it's like waiting for paint to dry, but when it does come in it just keeps coming all the way to the red line.

Sending it to Vince at Universal Turbo's to have it diagnosed as I bought it as a rebuilt unit (Which it was) But don't know it's history or what it was built up for other than the seller stated it was built up for a big bhp cossie engine.

From the pics of the exhaust wheel, karl and Mike "R" recon it's not got a cut back wheel, but the pitch of the blades don't look like a RS500 should. The pitch is wrong.

Just trying to identify what it might of orignally come from (If it didn't come off an RS500, and what spec it might be.....