That doesn't mean that one big enough to fit your head through is the solution to that problem.

As long as everything is hooked up correctly and you aren't throwing a CEL, the car probably needs to be retuned for that overkill throttle body and manifold.

 

The throttle body is said to work fine with the manifold.

What kind of tuning needs to be done? why would it be running rich, I would have thought lean...

 

how can I tell the difference of the TPS and MAP sensor connectors?

 

anyone?

 

The TPS on my GSR is blue, and the MAP connector is black.

If you look at the wiring diagrams in the back of a haynes or helms for your car, they will list the colors of the wires that go to each connector.

 

bigger does not always mean better, this cannot be more true when talking about tb's. the stock one isnt much of a restriction until you start making big numbers.

and if you didnt portmatch the manifold to the tb you're creating a big bottleneck. the opening on the s2 manifold is 65mm i believe.

 

damn...so do you think that if I switch back to my stock throttle body it will run better? how will I run my FITV, my old throttle body didn't have a place for it, it was on the side of the mani. Do I need to run one??

 

Unless the B18 A/B engine is different from the B18C1, this is probably the root of your problems...

The FITV is located on the bottom of your throttle body, and the IACV is located on the rear of the intake manifold. At some point, the FITV and IACV were combined into one unit which mounts to the rear of the Intake Manifold.

If your old setup did not have the issues your experiencing now, try eliminating the FITV. If you still have the same issues, you might need to switch back to your old TB until you have a tunning solution.

 

my old throttle body didnt have the FITV mounted on the bottom of it, it was on the side of the manifold, under the throttle body.

 

so do I have to run a FITV?