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Additional material in the runners and plenum allows custom porting
5" diameter mechanical gauge is a critical tool for monitoring nitrous bottle & fuel pressure
The manifold includes our plenum porting service as well
If you would like them tapped for an 8AN o-ringed fitting
This TB has NO IAC Provision
4500 Throttle body screen adapter Additional material in the runnersThrottle body screens are available in the 4500, 4150 Low Profile. The screens are constructed out of stainless steel mesh, grommet, with stainless steel trim around the bottom. Screens come with hardware to mount to throttle body or carburetor. Screens are 1. 5" tall Diameter is 7. 5" Note: If using a carb, vent tubes must be low enough to clear the screen.
