Powder Freak 850 Head

turbo800

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Has anybody had RK Tek re-domed their 800 or 850 Etec head for boost?
He claims you can run 2psi more boost with the same grade fuel and make more HP with his dome design.
 

Chadly

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Did you get them on your 850 yet? How are you controlling boost level on your MPI kit?
 

turbo800

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Did you get them on your 850 yet? How are you controlling boost level on your MPI kit?
Yes, I was able to get the head mounted up on the 850 over the weekend. I haven't been able to ride it yet though. Those are mine pics I shared from Photobucket.

Boost is still controlled with the MPI adjustable boost regulator to maintain 200HP.

Had I done the RK Tek re-dome to the stock head, I would have added a boost T inline to add 2psi more boost.
 

turbo800

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I'm liking the PF head so far. Its hard to tell what I've gained, since I don't ride with any other 850 turbos. It has good bottom end pull and I've yet to hit the DET light, so that's a good sign.
 

doornenbal

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I have a head on my 850 as well as the others I ride with. No issues at all and most of us are 7-9 lbs, boost it turbo set ups. I have 3000km on mine
 
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