There are four ports on the throttle body marked A1, A2, E, and P. What is supposed to be hooked up to each of these? Currently on my car, A2, E, and P are capped off and A1 is hooked up to my boost gauge. This is how they were when I bought the car. I took my sig pic from the previous owners website so the picture was taken before I bought the car and in the picture all four of the ports are hooked up, so I was just wondering what they used to be hooked up to.

Emissions. They go to the EGR, charcoal canister, and thermostat housing. (Also under the intake manifold via "T" connections). Don't worry about them unless you need to pass inspection. I capped mine off last summer.

I'm going to inspection tomorrow. Do you think that they'll check them?

don't know if you will or not because jersey inspection is hard as hell.......... find someone that will do it for you at a garage.....

I had it inspected at the dmv today. They didn't even pop the hood. The only thing it failed for was loud exhaust, and it isn't nearly as loud as my rs which passed a couple of monthes ago. I'm just going to jam the n1 silencer from the rs into the exhaust when I take it back.

Good deal :thumbsup