I recently installed a block off plate in my car ( the big one above the turbo) After installing it, I notice about four small metal tubes coming from behind of the motor. I don't know whether to plug it up or to remove it.

 

plug all of em.

 

or remove that and plug it at the source.

 

It wouldn't affect the way my car runs?

 

It will affect it if you dont plug them. Ive also heard of people looping one to another.

 

I just bought a J-Spec motor, as I was taking off the manifold I noticed that the four tubes connect to these three plugs that were green, and black. I don't knoe exactly what they do.

 

Are you trying to use the j-spec intake? I was going to but theres so many little differences that make it a pain in the ***.

 

Same here, I was considering it, but it would be too much work. So I'm just gonna use my original intake manifolds from my 87 Turbo II, But use the Turbo and Manifold from the J-Spec motor.

 

HEY ORVILLE!..what's up man!..im glad that you are still trying to make your 7 work. What yr Jspec did you get?..If you are using the 89-91 you must use your old upper, lower, TB, injectors, rails, front cover, and must use the turbo/ manifold off the Jspec!
I will page you and hopefully help you out a bit.