I am looking to get more free horsepower. I have alreday removed my cats, and i am in the process of removing the air pump. I was going to do a search on the TB mod but it wouldn't let me could some one give me a link about how to do the TB Mod and some advice on how to get more free horsepower from my 87 N/A. Thanks

 

^ bump
C'mon people somebodyas gotta know...

 

what did you replace the cats with....?

is this an N/A?

 

How are you going to actuate your 6 ports? If you just remove the airpump you will loose power.

 

the back pressure opens my 6 ports and i romoved the cats and welded in 3 inch pipe make to the y pipe. Yes this is an N/A.

 

actually the 5th and 6th ports are actuated by exhaust backpressure on the 86-88 models.....89-91 is when they used the air pump to actuate them