I was given a throttle body spacer with gaskets. I was curious if I would see any differance after install. So yesterday I installed it, adjusted the throttle cable and made sure that everything was done properly. I have a 70mm TB matched to a ported & polished (to 70mm) intake manifold. The spacer is also 70mm and I also used 2 new gaskets that are 70mm.

When I tried to start the car I would hardly start and when it would start it would not idle. It was also spewing a blueish smoke. The were no CEL codes be thrown.
I took the spacer out reset everything, started the car and everything was fine.

Has anyone ever tried a throttle body spacer on the "S" and if were there any problems

 

Does the spacer and gaskets have the idle air passage holes?

 

Why would a TB spacer be used in this application? I don't understand how it would aid in any way.

 

me neither

 

Throttle body spacers have extra vacuum ports so you can clean up the amount of hoses and lines in the engine compartment going to and from the intake manifold.

 

From a performance point of view people have found them to make gains in other vehicles. I don't believe this is the case at all in the S as it has been talked about in the past.

 

any claim in FI vehicle?

they works awesome in carb'ed V8 but that's about it

 

Those are the only cases I know of as well, but maybe there's a fuel injected application that also benefitted at some point

 

Theses spacers also do work on the VQ35 engines, however this has more to do with the shape of their intake manifolds and how the spacers induce more swirl and tumble into the combustion chamber. Not so much of a factor on the F20/F22.

Aesthetically, the spacers do make for a cleaner engine compartment when you consider how many extra vacuum hoses you will have for a turbo car that would otherwise look like spaghetti.

 

how come they are only for 06+ models