What a difference the right presilencer makes...

[$100T2]

Yo, yo, check out the old mAd TytE catalytic the previous owner put on!

Yep, it's totally hollow. And I was wondering why I couldn't hear myself think at anything over 2000 rpm.

[$100T2]

What else is wrong? Hmm. There's no connection back to the engine for the 5th and 6th ports. Mad bolt welding skillz, yo!


If anyone can tell me what that open vacuum line is, I'd appreciate it. Also notice where the pickup for the aux ports is is wide open. I'm assuming they are wired open, but I can't tell, and don't even know where to look.

Guess what else? The O2 sensor wire is busted. Could that be why the car gasses me out every time I try to drive it?

[$100T2]

And here's the correct RB presilencer. The car is a good 9 million dB quieter now. I gotta get the tube from there to the engine, and see what the deal is with the rest of this. I'm also going to replace the O2 sensor with a brand new one I have laying around, and replace the entire shitty, spliced wire you see in the picture. Hopefully it will have the 'vert running much, much better, and stinking much, much less.

[$100T2]

The metal thing sticking out right where the black and red wires are spliced together. It looks like it needs a hose on it, but I don't know what for.

[vex]

The metal thing sticking out right where the black and red wires are spliced together. It looks like it needs a hose on it, but I don't know what for.

doesn't need to be connected to anything. just vents excess air from the airpump. Just use the air pump for actuation.

[$100T2]

Are my 6 ports wired open? How can I tell?

I have no airpump, btw. The only thing still on the motor is the power steering. No A/C, no airpump.

I need A/C. Stat. Summer here is a bastard.

[RoughRex]

doesn't look like it... looks like the actuators are just missing. I can try to snap you a pic of mine when I get home later.

[vex]

Actually, no...that's the tube that the pressurized air that would operate the 6 port actuators goes...it is a Y pipe that feeds air to the 2 actuators which (on this engine) are missing.
I think we're talking about two different hoses. The one that exits the rear of the LIM above the rear rotor intake is the hose I'm referring. Were you refering to a different one?

The split air pipe goes from the cat, to the big hose on the back of the LIM that is hanging there. On the split air pipe is a small nipple and a vacuum hose that feeds the above mentioned small Y pipe.

So even if you had the SAP you would be no better off without 6 port actuators.

It's been awhile since I actually had a SAP on my car so I very well could be mistaken, it just seems from memory that the 6PI actuators were fed by the back pressure and when the pressure was less than that the ACV routed air through the hose on the rear to heat the main cat. Am I mistaken?

Since he's installed a resonator and header combo, the SAP has pretty much become useless so wouldn't that hose then just become a vent from the Air Pump and ACV?

[$100T2]

So if I'm missing the actuators, unless the aux ports are wired open, I'm going to be missing some high end power, yes?

[RoughRex]

See attached pic... best I could manage in the dark. You can see that the little vacuum line runs to the split air pipe under the check valve. You can also see the Air control valve and one of the port actuators that you're missing. And yes, if you're missing the actuators and the ports are not wired open, you are losing top end, conversely, if they are wired open... you lose a little low end. That's why they exist ;)

*Nevermind the green twist tie mod, I can't disclose the horse power gains per my mechanics wishes :D

[Max777]

I have two S5 Actuators, as well as an S5 split air pipe if you want them, free, just pay shipping if you want to try em out. I can cut the split air pipe so that it fits into a smaller box too.

[$100T2]

I have two S5 Actuators, as well as an S5 split air pipe if you want them, free, just pay shipping if you want to try em out. I can cut the split air pipe so that it fits into a smaller box too.

Excellent. Paypal info?

[Max777]

pm'd!

[Max777]

My car is an S5, and the LIM had the actuator rods SEIZED in it, so the 6Port crap was useless now. I ended up removing all emissions, 6pt, VDI actuator (safety wired open, lol) cat, airpump, and some other stuff as well.

Ironically I did NOT do the TB mod, messed up one TB doing that already.

[vex]

s5 6 port actuators do not work on s4 LIM's...they turn differently than s4. Plus the air gets delivered differently.

This is an S5?... Why was I under the impression this was an S4? I'm so confused now.

[vex]

So if I'm missing the actuators, unless the aux ports are wired open, I'm going to be missing some high end power, yes?

It looks likes they're in the closed position from the look of the rods. I would suggest checking to see if they just ended up removing the sleeves. I think you'd be able to tell if they did or not by driving it; do you have to rev the engine before engaging the clutch to move up a hill or on flat ground? If so you may have the sleeves removed. If you're not sure, check. only a few nuts and bolts to undo and look at.

[Max777]

s5 6 port actuators do not work on s4 LIM's...they turn differently than s4. Plus the air gets delivered differently.

Aww, oh well, in that case I will just throw them in the garbage or something... if anyone needs a FREE set of actuators tell me before it's too late guys.

[SecondGenPat]

Also, I've never had faith in the headers and silencers that claim to be able to run the 6 ports. There will be little backpressure without an actual cat, and 4-5psi is necessary to operate the ports. You're far better off to just rig something up using the air pump or an electric air pump IMO.

I have always questioned that as well.
One idea I had was to pinch the SAP somewhere along the way to the resonator to act as a restrictor. I would not pinch it all of the way, just enough to provide the proper resistance. Any thought as to why this would be a bad idea?

[NoDOHC]

Generating pressure from the pump. I tried it with limited success (used a plate with a very small hole in it what the line bolts to the cat). The pump is not always intelligent about when it pumps air into the exhaust. I had to do something to the ACV as well (I don't remember what it was - too long ago).

I did get it to work pretty well in the end, but I had to put a helper spring on the actuator in order to get it to open at 3500 rpm.

[$100T2]

I looked at the other side of the engine, and there is a block off plate where the other actuator would go. I'm assuming the sleeves have been removed.