I've had my 2 liter ZVH rst on the rollers last week, deliverd nice power but the revvs stopt @ 6000.
it's a little annoying because my turbo really starts spinning @ 4500 rpm
Goes like hell to 5500 and then slowly to 6000.

Thinking of putting on a smaller turbo to get full boost @ around 3500 but it should rev much higher!!!

what could be the problem... wrong cam timing??
Bought an adjustable poulie yesterday and wil fit that soon but when that's sorted should i get more revvs or could there be something else wrong...

Thanx a lot