Right I've sorted it. The units are mm/hg x100 so 3.5+ would be 6.7psi+. I've got the turbo off now & tested the wastegate & actuator which are fine.
Can't do too much comparing at the mo as the engine's in bits (the boost going to the top of the stock gauge on the way home was just something I remembered the other night) but I'm adding a "proper" boost gauge to the shopping list once the HG's all sorted... I've updated my other thread on the stripdown & will hopefully be adding some pics tomorrow sometime.
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'89 MA70 Supra GT aero 3.0turbo JDM, Rebuilt motor, K&N intake, 3" stainless turbo-back. New turbo and braided line kit...
'89 Honda NC27 400, NC23 cams, open pipe, PC36a shock & possibly Showa USD forks...
'83 Yamaha 29R XJ750E-II, number 69 off the line, only runner in the country? Original except Koni shocks
'95 Honda PC26 CB500R, Winter hack, hateful, trying to sell it
I'm not paranoid, they really ARE after me!!! 
Last edited by MA70-3.0GT; 12-04-2009 at 05:51 PM.
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