1987RX7guy

iTrader: (3)

Ok I recently got my financial aid check(first one at least) which means the second will show up in about a week. That means that I will have enough money to buy the dual exhaust from mazdatrix now. But I recently saw a post that said the cats in S4 control the 5th and 6th ports opening. Is this true and if so how do the guys with no cats on their exhaust get around it. With the removal of the stock system I also planned on removing the air pum and acv I am getting the block off plate for the acv from some guy on the forum. Does doing this mean I have to wire the ports open or what I do not want to do that sice every one agrees that if the ports are functional you loose bottom end tourqe. How would I be able to maintaine normal opperation of the 6th ports. Thanks for tha help!

darkwaveboi

isnt financial aid for living..?

taking the exhaust off is easy..but it can be a bitch if you got rusted parts.

The 5/6 ports are operated by backpressure, which the cats DO give you a lot of.

You could use an RPM switch to open the 5/6 ports. I believe there are a couple writeups

1987RX7guy

iTrader: (3)

I live at home saves me 3k/semester hehe hell that is how I got my FC.

Ryde _Or_Die

Aren't rx7's required for living?

Anyways, call mazdatrix up. Its all taken care of with their setup.

1987RX7guy

iTrader: (3)

THanks Ryde or die I didn't know that. and yes FC's are a vital part of my live I almost fell into depression when I was waiting for my banjobolt to eliminate my PD.

By the way the BB works great no more leaks like with the PD look for my other thread and let me know what you think it is WTF!?!?!?! I really need help.
Thanks guys!

Matt22

iTrader: (10)

skip the exhaust and get a Header that will take care of
it for ya. then get the rest of the exhaust. jsut my .02
lates Matt22

1987RX7guy

iTrader: (3)

I want to ramove the emissions stuff since "I know people" I do not need it so that will lighten the car and the exhaust will give me some good HP gains since it is a complete system and just bolts on plus I am really interested in finding out if the numbers they got on the dyno. That is like 30hp but I will proly get like 10 or so since my car is still being brought back to stock conditions I still need to clean my intake the 5th and 6th ports are working but the mothas r durrrty!

silverrotor

iTrader: (1)

With all emissions removed, I had the same ordeal.

Do a search with my name In It If you wanna follow my set up that Includes a RPM Switch and Air Compressor.

It's a solid setup that ensures the Auxilliary Ports opening on demand.

silverrotor

iTrader: (1)

Nevermind. https://www.rx7club.com/forum/showth...xilliary+ports

1987RX7guy

iTrader: (3)

Thanx I will look in your thread but I am also going to check with mazdatrix.