ok i put the exhaust on today and now have to face the prob with the auxillary ports.

will prob go the route of donig the air pump mothed but not sure yet.

the hose that goes to the back cat i can completel y reomove right? well just hook up a other hose and tap into the air pump one right?

secone if i zip tie the ports open, can i do this by simply pressin in the rods on the ports and tying them in place?
any pics out there to view for reference?

thanks

 

The best write-up I've seen for an inexpensive way to work S4 open exhaust aux ports:

http://www.rotaryresurrection.com/

click on "tech" then "airpump 6 PI"

You really do want them to work or you will loose the bottom half of your power band.

 

Where is the best write up for the same mod on an s5?

 

S5 aux ports are opened by the air pump so there is no need to do it

 

so an s5 you can free up the exhaust all you want and not have to worry about the ports not working ever because the air pump does all the work

 

I pulled the air pump on my former S5 NA & used an electric pump.
Here's how it looked:


Here's the schematic:

 

will the 5th and 6 ports open in neutral?>

 

On an s4 it will open in neutral, s5 needs to have a load(driven) so they can open.The hose that you tap in to (s4) is the acv to acv muffler hose.Its right under the afm.

 

What is S4 and S5??? Can I free my exhaust up? I don't have an air pump on my car...or the two hoses...

 

so an s5 you can free up the exhaust all you want and not have to worry about the ports not working ever because the air pump does all the work anyone?

 

what do you mean by whats a s4 and s5 stand for?

 

S4=series 4(86-88 RX-7's)
S5=series 5(89-91 RX-7's)

 

Yeah...I got that after going to the FAQ's...sorry...I can be a dumbass from time to time!

 

have you drove the car with the exhuast and tried the 6pi yet?
or just assuming that the 6pi won't open cause the exhuast