daviddh85

I was playing poker saturday night after a long day of working on my 86 NA. I took off the ac pump and disconnected the air pump hose. And was ready to take all the emissions off on sunday. While getting drunk as ****, that's when i seem to have my best ideas, one came to me. I was thinking that the air pump is no more than that, an air pump. I thought maybe I could retrofit some kind of crazy supercharger type system with the air pump, instead of removing it. Next day i went out to see how much air the air pump actually puts out. It was insane the amount of air coming out of that thing.

So heres what I did, what didn't work, and how i got it to work:

First off, just to let you know, i have a close to bone stock 86 na(except for K&N) in good shape with 120,000.

HERE's WHAT DOESN"T WORK: First, i measured to see how much hose i was going to need to go from the air pump, through a hole in the intake tube, and mounted a few inches from the throttle body, shooting right into the primary. I got two feet of hose (7/8 i believe) but i got to much. I always like to get more just in case I **** up and save my self a trip to Autozone. I also got a 90 degree elbow that would fit in the end of the hose. i drilled a hole in the underside of the ridgid plastic piece bolted to the throttle body and aimed the elbow straight into the primary (bottom of the triangle). I sealed it up with some quick dry, hard setting sealant and connected it to the air pump. ALRIGHT, FOR ANYONE WHO WANTS TO DO THIS, DISREGARD THIS PARAGRAPH. I'M TRYING TO SAVE YOU SOME TIME IF YOU THINK YOU CAN IMPROVE ON THE IDEA. YOUR ENGINE DOES NOT LIKE EXTRA AIR SHOT INTO THE THROTTLE BODY, AT LEAST AFTER THE MAF SENSOR. YOUR CAR WILL NOT LIKE IT, WILL TAKE A LOT OF RPM TO KEEP GOING, AND THEN RUN TO LEAN!!!! DO NOT DO IT THIS WAY.

Here's what did work- I have one of the adapter plates coming off my MAF sensor for using a K&N Cone. If you want to do this and don't have an intake system like this, you'll have to get a little more custom than I did. Since I had already discovered that my car did not like being so damn lean, I had to run this hose in front of the MAF sensor. For that, I measured the diameter of the plate, (turned out to be exactly 6inches) and went to the hardware store. Now there are a few options for running this spacer, which is what you're after to run it in front of the MAF sensor. one, you can use white plumbing pipe , a short length of about 3/4-1 inch deep, or aluminum hosing used for exhausts on driers. I went with the pvc conduit. You cut that to the desired length, of .75-1 inch, and cut a hole the diameter of your hose in the top. Slide the hose through, and put the 90 degree elbow on blowing into the MAF sensor. Seal up the hole in the conduit, with your hard setting sealant/adhesive. BTW, I also sprayed the conduit black to make it disappear. Hook up your hose to the air pump, and off you go.

It is a remarkable difference. Your RPMs shoot up during acceleration and you get a shitload more power between 3-8000 rpm. It is definately worth the little bit of work that you put into it, i mean, free horsepower is free horsepower.

I like to call this the Miller modification, named after the great tasting, less filling inspiration for this idea.

Any questions, email me at davehumphrey85@yahoo.com.

BTW, i dont take any responsibility for damage it inflicts now, or in the future to your RX7. I will not be held accountable for any damage. (even though i've had it on for 3 weeks and it runs like a raped ape now)
PS- It may be more noticable with a better exhaust system too. I'm running stock. I'll probably put in an intercooler too, just a stock one off a second gen turbo, so if anyone has one laying around and wants to thank me for my idea, email me. ;-)

SonicRaT

iTrader: (6)

Then you woke up....

Denholm

How do you know it produdes 40 more hp? :P
shoulda done a before and after dyno test..

sounds cool though

MattG

iTrader: (2)

All i can say is OMG you must have been crazy drunk!

RotaryEvolution

iTrader: (30)

lol, the amount of flow they put out is miniscule compared to a turbo. basically the added airflow is correcting for the few hp lost due to turning the stupid air pump.

Phantomkid

haha cool concept.. thats thinking outside the box gotta love the miller..

Tournapart

iTrader: (4)

hmmm.....sounds like a completely reversable procedure, i might try this just for fun


the only thing im really worried about is damaging the MAF

Valkyrie

No way in hell an air pump could provide a boost...

It would mean it's pushing more than the engine is already sucking, which is A LOT.

Perhaps your ghetto rig is just fixing a problem your car already had? Like running too rich? Or having 6PI that didn't work?

Sort of like the same way a butter knife could be used to gouge open a stuck door... when what you really needed was a little oil.

Well, as long as it opens :p

DREYKO

got pics? im feeling sceptical...

speed_monkey

you should get one of those awesome tornadoes to spin the air from the air pump.. thats like another 10hp!!!

Tournapart

iTrader: (4)

Rofl

Apathy

The air pump doesnt put out that much air. If you wanna try something retarded, my friend hooked up a vaccuum cleaner to his car and reversed the air flow (so it blows instead of sucking) and had it on a switch. It sounded like a vtech for a rx7 almost. Didnt give him much power but it gave him a little. It was funny, he did it b/c we all have turbo cars but he doesnt have a job so he just wanted something inexpensive to do. I'm not going to claim any outrageous numbers but it was ok for what it was, a $30 job not including the vaccum. lol. He probably could have made as much hp by getting a nice cold air or ram air intake setups.

Tokyo-RX7

yea i wanna see some pics. Im all for ideas. But you confused the **** out of me. lol maybe even a diagram.

melicha8

iTrader: (1)

You're pumping it into the atmo. There's no contained volume(IE between ports and a turbine) in the filter you are talking about to keep a positive pressure. If there's no pressure then there's no power. It is definately not worth the little bit of work that you put into it, i mean, a drunk idea is a drunk idea.

playdeadva

theres a thread for like "cheapest mods" or something anyone know??
haha this is perfect. i tried that open air box thing and it sounds cool but it does nothing.

melicha8

iTrader: (1)

sorry I had to read it again to really get some perspective. So, "off you go" just like that huh? Make sure you all email and thank him for the great joke.

TitosToy

lol..hilarious. that sounds like those electric "superchargers" they sell in ebay. they supposedly could push 3-8psi of air through your intake.

rotorforce

OK guys first off I don't really care about N/A's to begin with..but I respect anyone who drives one since I have had 5 in the past. Second instead of busting this guys ***** to no end, why don't you help him find a dyno somewhere to run the numbers? He comes up with a theory that makes sense but might not really be working and all you can do is flame him? To the thread started get the thing dynoed and let's see what the number's are. If you can't then hook up the gtech gperformance gadget to your lighter and see what the numbers are.

Has anyone else tried this before???

You guy's remind me of religoius zealots..."That's preposterous!! burn him at the stake!"

RotaryEvolution

iTrader: (30)

i posted what i thought and will continue to think until i see it in person.

SonicRaT

iTrader: (6)

We've had this discussion long ago, which is why we know it won't work (although, common sense prevails here as well)

rotorforce

That was not meant for you and you obviously agree with me..Let's see some numbers and detailed photos of the install in order to better understand this so-called "modification"

Wow just imagine~~~~an N/A reaching 200hp~~~~

rotorforce

I can imagine it's been discussed before...What hasn't

speed_monkey

It's been done before...

melicha8

iTrader: (1)

Don't be so oversensitive man. Any person who posts a thread that begins with "drunk as ****" and "great idea" should keep it to themselves. He had it coming. Furthermore he has the ***** to come on here and tells us we can email him to thank him for his great idea, which actually sucks, deserves to get chuckled at. Let's all make up and tell the mods to post this in the humor thread and delete all but the first post so we can start with a clean slate

rotorforce

It got your attention didn't it? Do you think he left his email address so that you guys could send him jokes about his work, or perhaps flame him privately? He felt he was onto something and wanted to share it with the N/A community. Perhaps your right this should be in the lounge.

Yeah it's been done blah blah blah.. LOL let's not go there... I will not even waste my time arguing that at all..