Quote:
Originally Posted by Sh0velMan
I have a spare intake and I am planning on investigating having the plenum and runners modified to increase flow on the top end. My last dyno definitely points to a plain and simple flow limit.
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You want these .................... but will only fit with the HR head conversion ...
Nissan VQ 3.5L - SF Taper throttle body kit - Jenvey Dynamics
I have these TB on my race car engine with air flowing straight at the inlet valve and they support air-flow to deliver 600hp (NA, @ crank).