nsomnia_redline

hey guys i just took apart my intake and installed a universal cold air. how do i defeat the mass air flow sensor? or take it off? i just messed up the internal splines trying to pry it away from its housing, so there may be no turning back.

black_88

why did you take it apart in the first place. I dont know of any "cold air intakes" that say you have to take it apart.

need RX7

iTrader: (4)

No way to get rid of it without an aftermarket ECU...

HAILERS

I'm not sure what the intenal splines are that your talking about, but it sounds like you just fucked up. You need to buy another afm and install it. The engine will not run without it in stock configuration.

That stock afm will handle more horsepower than that engine will ever make in its life.

nsomnia_redline

there was 2 screws on the coupling linking the wire and maf i unscrewed in and all these wires came out and unhooked and flat pieces of metal. my bad i don't have a camera or i would have taken a pic. also my bad for thinking that the intake would work no problem so anyhow i took a deep breath and put it all back the way i thought it should go and car starts right up, sounds funny tho like its healthy or something. has a crisp sound like a sowing machine on crack but in a pleasing more ready to go and not so lazy and slow on the throttle. my only concern at this point is that when i start it up at first every day it idles about 1,000 to 1,500 at stop lights and in traffic every day till its temp is normal then idles about 700 rpms. tonight it did that but at 3,200-3,500 or so. also io heard a rattling about 3,000 that must have been a loose hanger or something. but thanks for your help and hopefully some one on here can tell me how to properly install a cold air intake. so tell me. do i need a after market ecu for real?

black_88

you need an aftermarket ECU if you want to get rid of the stock afm.

need RX7

iTrader: (4)

The stock ECU relies on the AFM to determine how much fuel to inject, the car needs it to run. Most 'cold air' kits have an adapter that bolts onto the front of the AFM and replaces the stock airbox with a cone filter. The AFM needs to remain intact.

Wht90Rx7Conv

These cars run at high rpm when the car is in neutral at cold temps. If you start the car in gear (of coarse with the clutch in), it will run at a lower rpm for warm up. As far as your AFM. You should have never messed with it. Get a new one if you really messed it up.

boostinfc3s

your half way there, might as well go full standalone now.. LOL

need RX7

iTrader: (4)

Lol, that's assuming you pay $1000 for a new AFM

nsomnia_redline

holy crap, that would be an expensive lesson learned, i bought my car for 900. so where do i get an ecu that will work for that? or is there like a universal attachment for the maf? or can i some how modify it to the cold air intake? i know that my be a stupid question. but im working on 8 grand a year and id love to find a solution that wont cost much but also im not about to hack and slash a ******* critical component to the poor 7! im sure there has to be a way to set it up to work othere then another ecu. im finding it absolutely ridicules that i cant get to work buuuuuut to Mazdas credit they did make a sports car that is in most every way already a sports car. its just sad that a even tho some of the tech in the car is to this day ahead of its time.... i think..... guys like me just cant be happy with stock. as for that maf, im going to double check that **** when its light out to make sure i put it back the way it needs to be and then leave it the **** alone to i have a better solution lol. yeah i am half way there and id like to be all the wya there. any ideas guys?

also im sure some of you guys have cold air intakes how did you guys do it? with the ecus? lol maybe the shop did it for you? or did you find the holy grail part? there has to be because i believe the person that said the mass air flow would handle more then what the engine would... but im also gullible.

nsomnia_redline

ok guys ******* **** ****!!!. anyhow this was all in the heat of things and i final got home from the races and took a look at options i discovered an adapter (EXACTLY WHAT I ******* NEED) for 13 bucks so discussion closed thanks for the help on this one guys

for future people with this issue
http://www.autozone.com/R,2390574/ve...ductDetail.htm

Aaron Cake

iTrader: (1)

Wow. I think this is the first time I've ever heard of someone destroying the AFM instead of just buying an adapter.

For the record, many older BMWs use a similar AFM and can be found at the wreckers. They use the same adapter to connect to a circular airbox.

And just so you don't do something like this in the future, the Factory Service Manual can be found in the FAQ For FC thread. It contains all this information and more, and is an essential tool for any sort of service work that needs to be performed on these cars.

Additionally, the Haynes service manual for the 1986 thru 1991 RX-7 (both turbo and NA) can be found at most local auto parts stores or purchased from any good bookstore (ISBN number 1 56392 007 7). It is only about $25 and is a great quick reference for things like this. Not only does it contain most of the information in the FSM condensed into an easy to read format, but it includes full wiring diagrams as well.

These manuals will answer 99% of service related questions for the car and if you intend to do your own repair work, you will need at least one of them. Preferably both, since the FSM is a free download.

need RX7

iTrader: (4)

The only thing you need is an adapter so you can put a cone filter where the stock airbox used to be. All this ECU talk is irrelevant, the only reason it came up at all is because you said you wanted to get rid of the AFM, which is not possible on the stock ECU. All you need to do what you want to do is an adapter and a cone filter. And a new AFM (junkyard) since you messed yours up.