B16A2 Inlet manifold on B16B?


I currently have a B16A2 inlet on my B16B, but i don't know if that is the cause. It's idling @ 1100 Rpm?
 
The B16A and B16B manifolds are similar, the manifold on the B16B is I believe identical to the B18C manifold and has somewhat larger plenum and runners. The B16A manifold will produce less power than the B16B manifold but shouldn't result in idle issues-have you adjusted your idle via the diagnostic connector and throttle body adjustment screw?
 
Always considered the B16A manifold to be better suited to street and daily driving. The longer runners and slightly smaller plenum gives for a more usable power band mid range. Just results in a bit of a lazy top end above 7k compared to the Type R B16B/B18C manifold.

Idle shouldn't be affected at all. Will more likely be fault with the Idle Air Control Valve on the back of the manifold just to the right of the Throttle body. Try cleaning it out and then doing an ECU reset. Might be worth checking the Ign Timing as well while at it. Found when I had fitted my dizzy a little off it raised my idle a bit as well.
 
Any reason in particular your using a B16a2 manifold on a B16b??
 
KieranEG6 said:
Always considered the B16A manifold to be better suited to street and daily driving. The longer runners and slightly smaller plenum gives for a more usable power band mid range. Just results in a bit of a lazy top end above 7k compared to the Type R B16B/B18C manifold.

Idle shouldn't be affected at all. Will more likely be fault with the Idle Air Control Valve on the back of the manifold just to the right of the Throttle body. Try cleaning it out and then doing an ECU reset. Might be worth checking the Ign Timing as well while at it. Found when I had fitted my dizzy a little off it raised my idle a bit as well.
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Yeah what he said. Probably an iac at the back of the intake. Don't touch the adjustment screw on the throttle body as that is not supposed to be touched!
 
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