ok..now to sound redundant..but if you remove the cats...and the airpump..what activates the secondary ports? And...what are pineapple inserts for the 5th & 6th port? and what does it do?



Thanks for entertaining the newb questions



ShadowRacer

 

good pictures of 5&6th ports and inserts the inserts allow for better flow, from a 90 degree turn to a gentle slope



there's a lot of info on this in the 2nd gen faq's



on the series 4, there is a tube that runs from the main catalytic converter back to the intake manifold. From what I understand, this serves 2 functions. It provides fresh air to the cat to facilitate the converting process, and the backpressure from the tube activates the secondary ports. The air pump can be removed if the cats have been taken of, but that tube can be retained to activate the secondary ports with the back pressure.

 

or you can run them off a cadillac airpump and a MSD RPM switch

 

i just ordered a block of plat from mazdatrix it cost me like 7 bucks and i ordered a rotor shapped dull pully for 40 shipped

 

email me if u want rotorshaped pulley



$40 USD shipped



http://rx7cz.net/pics/pulleys/