Disclaimer... Testing, testing, testing. Not the most practical way to go about this but why not. This is a early 2000 Ford MAF installed into a 3 inch OD pipe going into the turbo inlet.
My first readings in the unmodified version were 1.1 volts at idle and would push past 5 volts around 4krpm at 8ish lbs of boost. Saw a high of 5.3 volts once I pushed it a little deeper. I'm now seeing 0.6 at idle and 3.8ish at WOT.
Reducing the flow past the element will reduce the reported voltage, same effect as using a larger housing with the same element. I can add more holes to increase the total range as long as max voltage stays below 5 volts.
Closing off the exhaust port of the MAF reduced the flow through the element which reduced the output voltage sent back to the MS unit.
Once I'm happy with the volt range I'll wire it into the MS unit and do some data logs and toss the calculator at it to create the MAF transfer function.
Modded MAF element
Moderators: jsmcortina, muythaibxr
Modded MAF element
306 SBFord, Torquer II EFI intake, 60 lbs injectors, 8 LS2 coils, VS Racing 7668 turbo, 4R70W, MS3x fw1.4 w/built in trans controller.
Re: Modded MAF element
You might try a MAFia MAF extender or the DIY version.
http://www.americanmuscle.com/diablospo ... -9604.html
http://www.focusfanatics.com/forum/show ... p?t=202112
http://www.americanmuscle.com/diablospo ... -9604.html
http://www.focusfanatics.com/forum/show ... p?t=202112
___________________________________________________________
If nothing breaks, you're not trying hard enough...
Datsun 280Z
ITB
Turbo
MS3 + MS3X
If nothing breaks, you're not trying hard enough...
Datsun 280Z
ITB
Turbo
MS3 + MS3X
Re: Modded MAF element
Looks expensive. I was thinking of doing a 10k pot to scale down the outpit reading which would allow flexibility but I wasn't sure that the output would go above 5 volts. I'm sure I can salvage yard an other element and then play with the volt divisor to watch. I didn't want to smash too much voltage into the ADC pin and break my ms2.
306 SBFord, Torquer II EFI intake, 60 lbs injectors, 8 LS2 coils, VS Racing 7668 turbo, 4R70W, MS3x fw1.4 w/built in trans controller.
Re: Modded MAF element
Take a look at the second link in Sam280Z's post, which describes a DIY version. It's not just a pot, but also a resistor in parallel to the pot.
QuadraMAP Sensor Module -- PWM-to-Stepper Controller -- Dual Coil Driver
Coming soon: OctoMAP Sensor Module
TTR Ignition Systems
Coming soon: OctoMAP Sensor Module
TTR Ignition Systems
Re: Modded MAF element
The pics the op showed are just your standard voltage divider. 2 resistors in series while pulling your new scaled output from the center. With a single 3 pin pot your output voltage will come from the wiper. Pretty simple stuff.
306 SBFord, Torquer II EFI intake, 60 lbs injectors, 8 LS2 coils, VS Racing 7668 turbo, 4R70W, MS3x fw1.4 w/built in trans controller.