Half the fun would be to build your own circuit to drive/condition the maf output and make it usable. A fun AVR project/C project.
It isn't a big deal to go from frequency to an analog out w/ a micro controller.
Mass Air Flow
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paul_f
- Posts: 432
- Joined: Tue Jun 04, 2002 12:01 am
Re: Mass Air Flow
The problem is the analog MAFs give a somewhat averaged signal, the new digital ones require the ECM to sample all the pulses get the average (or in fact, use a micro that has a pulse counter, then you just sample the number of pulses and the time between samples to get the average)
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Steve Arndt
- Posts: 7404
- Joined: Sat Mar 10, 2001 12:01 am
Re: Mass Air Flow
I am talking about hot film 2006 jetta MAFs.
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Munchhausen
- Posts: 175
- Joined: Mon Feb 21, 2011 10:37 am
Re: Mass Air Flow
What are the advantages of these MAFs?
The older ones from the nineties have an analog output.
The older ones from the nineties have an analog output.
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Jadewombat
- Posts: 1447
- Joined: Sat Jun 22, 2002 12:01 am
Re: Mass Air Flow
Great topic here, I pulled a MAF off a '88 Volvo 240GL for use on my bus super-1600 engine as soon as it comes home from the paint shop. The sensor is probably a little bit big, but hopefully will work. If not I'll go spend another $10-15 getting a smaller one.
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vwchuck
- Posts: 13
- Joined: Sat Nov 16, 2002 12:01 am
Re: Mass Air Flow
Actually the mass flow meter is the way to go. I am not sure why everyone is so fascinated by speed density. It is not at accurate as a massflow system. It is also far easier to calibrate since it is just a target AFR and the system applies the correct amount of fuel. No driving and letting it tune itself.
Also the Ford MAF can flow alot more then what engine they are on. The Ford stuff has a clip at like 3.5 or 3 volts so you still have the remaining voltage up to 5 volts to use in an MS system.
I am guessing you can use a Ford ECU but you would need to watch what you are doing and you would probably need to run it richer then what the Ford calibration already has in the ECU. Also the only ECU that Ford has that can run a turbo is from the 2.3 turbo from the 80's. THe bad news is that this system does not use MAF.
You might be able to go to a GM ecu from a turbo ecotec but I don't know much about them.
They are all alot of work to get working in the end but if you choose a path and get to far down it it is hard to turn around and choose another path especially when you are fund limited.
Also the Ford MAF can flow alot more then what engine they are on. The Ford stuff has a clip at like 3.5 or 3 volts so you still have the remaining voltage up to 5 volts to use in an MS system.
I am guessing you can use a Ford ECU but you would need to watch what you are doing and you would probably need to run it richer then what the Ford calibration already has in the ECU. Also the only ECU that Ford has that can run a turbo is from the 2.3 turbo from the 80's. THe bad news is that this system does not use MAF.
You might be able to go to a GM ecu from a turbo ecotec but I don't know much about them.
They are all alot of work to get working in the end but if you choose a path and get to far down it it is hard to turn around and choose another path especially when you are fund limited.
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ziggy55
- Posts: 1
- Joined: Mon Oct 19, 2009 4:49 pm
Re: Mass Air Flow
Actually you can convert a ford 2.3 turbo ecu to MAF. It is done an there are also piggyback modules for the ford 2.3 turbo ecu which allows you to setup you own parameters.