Originally Posted by STR8E180 
how big is each throttle body butterfly ?
i made a quad throttle for mine out of BMW M3 E46 throttle bodies
each butterfly is 50mm
They are 52mm
The ones I got are OBX K20 Honda ones off ebay, They are a complete and utter rip off of Jenvey Throttles. Even all the linkages are the same. The throttles are good quality die cast, Though ill strip them down and check eveything out, and probably replace the fasteners and reassemble them for piece of mind.
The manifold that came with it is sand cast and is average quailty, Wasnt very nice to weld, typical chinese sand casting really. Not sure how the manifold would stand too boost but that said the way the throttles are designed it would be just as easy to make a manifold to suit the throttles
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