I have an adapter for a throttle body with meth/nitrous inlets from zzp.. The gasket for our tb is actually a seal.. The tb or intake tube has to have a slit for this gasket.. So how if I put in this adapter will I seal it being that it didnt come with gaskets and the adapter is perfectly smooth so the stock seal will not work?

 

I have the same adapter, and wondered the same thing.

The stock seal is in the blower, the stock throttle body is smooth, and there's no reciever groove in the spacer for another seal, so it's sealed between the blower and the spacer, but not between the spacer and the throttle body.

I emailed zzp, the response was something like "it shouldn't leak, but if it does, you can use a bit of silicone"

 

Black or grey rtv silicone will work fine. Just lay a goob bead so it fills properly