Also, this Opel made 400bhp using the he221w which I find hard to believe.

http://www.turbotec.com/henkiloautot/kilpaautot/

KKD Motorsport

http://www.vkmmotors.ee/e-pood/Holset-HX27W/

Thanks for the prompt reply. I will keep you posted on my progress and when I put the car on the rollers within the next few weeks!

[QUOTE=ForcedInduction;155477]Here is what Cummins has for it.
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Is this similar to the He221w?

Hi mate, what do you think of the info on here:

Google Translate

Awesome, I was hoping you were going to try this one out when I saw you bought it. Just a few questions, how is the backpressure to boost ratio? What rpm does is spool at? What pressure do you have it set at? Any gain or loss in 0-60?
Sorry for all the questions lol

I was told holset mass flow as per the map is in (kg/s)*sqrt(K/MPa) which isn't equal to just the usual kg/sec? This figure also needs to be multiplied by 0.773 to get a lb/min figure. I'm no maths guru so if it doesn't ring true let me know.

Mitch.