for my s4. I am currently using a EGR Solenoid with a RPM Switch. Worked out beautifully allowing the sleeves and PR Inserts to do there job. I will be removing my Air Pump and ACV (3yrs old, now for sale) and will rely on my 12vAir Compressor. Will post my results.

 

i think i sent u a pm about this. let me know if u got it.

 

I finally got It yesterday. It seems the seller thinks Toronto Is further than It really Is.

 

Just some thoughts. Is that compressor rated for constant use? It looks like the ones used for air horns, which only run for short periods. I presume you intend to run the pump constantly and open the solenoid valve at a set rpm. That means the pump will spend most of it's time pressurising the line with no flow. This will quickly heat the compressor up, and might cause premature failure.
Maybe you could do away with the solenoid valve altogether, and use the rpm switch to operate the pump via a relay. This means the pump would only operate when the ports were required to be opened. Those compressors reach full pressure very quickly (air horns sound almost instantly), so with a bit of tuning with the rpm switch, you should be able to get this running as good as (or better than) the stock set-up, plus there'd be less risk of overheating the compressor.
Like I said, just thinking. Give it a go and let us know how it goes!

 

And a blowoff valve for the excess pressure. Mine open at 4.5 PSI.

 

Good point, about these pumps rated for constant use. I was messing around with It yesterday and I was Impressed with how loud and how quickly the pump warmed up. My guess Is It Is not rated for constant use. As OC will agree with me on this, Is It Is quite noisy aswell. I was going to reconstruct my electronic Auxilliary Port set up In the fashion you just described, mostly due to the above discovered points.

Will keep you guys posted.

 

If you only activate the pump when required, I doubt you'll hear it over the wailing NA exhaust!

FYI, in stock form, the auxillary ports open at ~3300rpm. That'd be a good place to start with the rpm switch.
If you have access to a dyno, do one power run with the ports closed and one with them open. Where the lines cross, that's the ideal port opening point.

 

With the compressor putting out 7-8 psi, I hardly think they will "begin to open". More like snap wide open.

I'm probably going to set them to open at 3600-3800rpm. Although this a premature guess. Again, I'll see how It pulls. I do plan on dynoing my car to tune the many added mods i recently did but In particular my S-AFC.

Also, I've been told that the ports start rotating at 3800rpm not 3300. Or Is It when they are fully open.

 

I believe 3300rpm is when the solenoid on the S5 system opens. Since air pump pressure rises with engine rpm, it would make sense that the ports would open as the rpm rises. Ideally you wouldn't want the ports to snap open, because the dramatic change in airflow characteristics could cause the engine to hiccup slightly. Taking ~500rpm to open would smooth that out.
The S4 system uses exhaust backpressure, which also rises with rpm, so the the ports would definitely open over a short period of time, not instantly. I assume Mazda would design this feature into the S5's system.
If your pump does cause the ports to snap open fast enough for you to feel the engine stumble, try lowering the pressure with an adjustable bleed valve in the line.

 

I've been using that setup for the past 3 weeks and it's been simply awesome! Of course having an S5 makes it easier. Like NZ saids, I can barely hear the compressor running when I'm flooring it; otherwise it's freaking loud(in test mode). I also think the quick snap is a good thing as I feel the aux port and vdi kicking in, yet it was never hesistating one bit. It has that turbo charge effect, one at 3800rpm and another at 5200rpm, woohoo!

 

Yeah, about that air pump, you might want to hound the J yards and see about getting one off a Cadaliac for thier air ride suspention. Or, if you are lucky enough to find a vette (not likely) you can get one of their electric air pumps.

Anyone know what other cars came with an electric air pump stock?

 

ahh it looks as if he already has a compressor........

 

HAHAHAHAHHAHAHAHAHA arnt we so observant!.. um.. NO. his compressor, if you can read, will probably over heat, so i told him where to get one that will better suit his needs....

 

dear sir,
its just the internet, don't get so excited
thanks

oh and from the sounds of things he is going to be running it intermittently so it only runs when the ports have to be opened and not constantly

 

Of course, when driving hard, the ports are open constantly, so the pump will be on constantly. At least, every winding road I've driven has inspired prolonged periods of 4k+ rpm driving.

 

At first I was going to have the Air Compressor running when the car was going to. That would mean all day and all night as long as the Ignition was "ON".

However, a couple of things along the way. It's loud! As NZConvertible pointed out, Is to check If It Is rated for constant use. Although the seller has not gotten back to me (*******) and their Is no make on the the Compressor, I believe that It Isn't rated for constant use. Also, It heats up rather quick.

No big deal. That just means I have to reconfigurate my Auxilliary ssystem to have the Compressor work when needed. Sounds good. The only thing Is the Compressor pumps out 7-8psi, which Is lokely to snap open the Ports violently.

Again, I have not set It up yet. But If It turns out I get violent jerks, I'll just get a bleed valve.

 

I'm afraid my engine may feel like an Epolectic Bull with this much pressure opening my Auxilliary Ports. Again, time will tell...

 

mmmaannn who the FFUUCCKK do you think you are, calling me GOD DAMN ******* "SIR"?!?!?!?! what are you? some sort of smart *** punk? boy, ill run you over with my steam roller, dont think i dont have one. you hear that ****? thats my steam roller sucka! its comin' to get your punk *** bbiiooottcchh... and trust me, i shift MaD qUIk yO!!!!!!!! on that thing too man.. ill run you down foo'!!!!!!!!!!!!!!!!!!!!


































JK! haha, im not pissed man, i was never pissed, it just seemed that you tried to make me feel stupid so i just dicked around. No hard feelings. we shoud out and be freinds.

 

You won't even feel them opening. I have a series four. I use a solenoid out of the wrecking yard and pressure taken directly from the rear of the airpump to open them. They open in a millisecond. I use the 3800 signal to the relief solenoid to activate the solenoid. You won't feel squat when they open.

 

Iv got the same pump that silverrotor has, I havent hooked up mine yet mostly becuase my local autoparts store are out of frickin hose! My plan was to hook up a rpm switch to it and go from there. If it breaks, so what. I lost a few bucks. these things are cheap.
It seems that the actuators open up around 5000rpm on my S5, and you can actually hear the pressure that opens them bleed off. If feels like they are opening way to late. I want to use this on all the actuators. 5th and 6th ports + VDI.

 

Yup, I never ever felt it open via the air pump but it is now very noticeable using the air compressor.

 

For what its worth....the 89 manual, online, pages FI 81 and FI 71, say the sixport solenoid is open at 3800 and closed below that.

EBAY... you can feel them come on line. Good for you. I can't. I admit to not being too sensitive about things like that. The way I have it rigged on my 87 n/a, anytime I hit 3500rpm(even in the driveway), the actuators go fully open due to the Relief solenoid getting a signal at that rpm.

On a series four(wifes stock car), I've ridden around with a spare lower intake manifold in the front seat, with its vac(pressure) hose tee'd into the one on the engines lower intake manifold. While driving, I saw the actuators begin to open around 3500 and would finally fully open around 5000. That was a completly stock car.

 

Any time, just come on down to NOLA and we'll light one up.

 

So what's your point? that I'm bypassing the factory settings?
Like I mentioned up in the beginning of this thread, I notice, a however slight, supercharging effect at around 3800 when the aux ports kick in and around 5200rpm when the vdi kick in. Prior to that, the airpump didn't seem to do **** for me. I was going to pull the intake to see if I put those damn pineapple sleeves wrong.
FYI, I'm using all stock factory electronic solenoids and settings. The only difference is scrapping the airpump for a $23 air compressor and a 30amp radio shack relay.

Good for me? Heck yeah, I can feel it now so it's good to know that.

 

No EBAY. I just mentioned the manual because somewhere near the top of this thread someone mused what the opening of the actuators was. Had nadda to do with what you wrote. Just some point of reference for those that want to know when the series five open.