crossbar17

5th and 6th ports dont open....wire them open?? i have no air pump so the pineapple racing sleeves would be useless since the ports cant open off the air pump


what to do what to do

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Blake

I answered this in the other thread. Yes, you can wire them open and you will improve the top end, but you will loose a bit on the bottom end (from having the 6-ports open at low revs). Ideally, you would fix your actuating problem and get the best of both worlds. What model and year 2nd gen do you have? There is a guy on the 2nd gen email list that created a fully electric 6-port actuating control (no airpump). I think the writeup is on FC3S.org > Electrical > Electronic 6-ports. Might be worth a try.

SpeedRacer

Actually, Rob's 6-port sleeves would still work fine with wired open ports. You would still have a loss of low-end power, but all I'm saying is, wire open Pineapple sleeves would be better than wired open stock sleeves. Blake is correct however in saying that ideally you would want to fix your actuation problem and get the best of both worlds.

Blake

Isn't that what I said?

crossbar17

should my ports work with stock exhaust but no maine catalytic convertor??, also i removed the pipe running from the cat to th top of manifold area and plugged both holes(this is where the pipe from the cat lead to an area near exhaust manifold i removed that hole pipe and plugged 2-holes) will my ports still open in this setup? and should those holes be plugged or left open as long as the air pump is still on the car??



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SpeedRacer

Well thats gonna depend on the year of your RX-7. If its an 86-88, then your 6-ports open from backpressure in your. Without a CAT converter you probably won't have enough backpressure to open your 6-ports, or they won't open at the right time possibly. If you have an 89-91, then the 6-ports are opened from air pressure via the airpump. You can do anything you want to your exhaust system, and on an 89-91 it won't affect your 6-ports at all. The pipe you are referring to that goes the the CAT is the SAP(Split air pipe). It takes air from the airpump, and then goes to the ACV, where its sent to the SAP to supply fresh air to your CAT to help keep emissions down.

SpeedRacer

Well, sorta, only you didn't mention anything about Rob's sleeves in your post, you just stated that wiring them open would make him gain high-end but lose low-end. I just didn't want him thinking, that if he DOES wire his 6-ports open, that Rob's sleeves wouldn't help him.

crossbar17

so taking my air pump off and blocking the outlet wont harm my back pressure or affect my ports??

also that split air pipe, am i supposed to plug the hoses it went into cause i did??


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SpeedRacer

What year is you car, you keep asking questions, that we can't answer without knowing the year of your car. As for the SAP, I don't think it matters, I didn't plug mine. With the ACV, SAP and Airpump removed, there is no air coming out of it anyway.

crossbar17

its a 88 SE and your sure once air pump is off and i put a block off plate on that those two sap hoses DONT need to be plugged

SpeedRacer

Well you'll need to block off the thingy coming out of the CAT, I didn't have to worry about that, cause I put on a racepipe. As for the hose the that's by the manifold, I've been running with it not plugged for over a year now.

crossbar17

i ave no cat
i have a test pipe as stated earlier


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