Authority MAF - different Chip
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From: Peachtree City, Ga
Authority MAF - different Chip
I just installed a older Authority MAF or MAP on my 964 C2. The question I have is related to the chip that came with the MAF. Does any one know if you can change to another chip over having to keep the chip that came with the MAF iself? The chip that came with the Auth. MAF has a smoother acceleration factor over the custom chip I had in before I made the change. The chip I had before had a noticable kick around 3500 RPM where as now it just accels smoothly through the range. From the seat of the pants it's hard to say one way or the other- accept the kick is missing. HAs anyone changed chips ??
Burning Brakes
Joined: Dec 2003
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From: miami, Florida
1
well, usually you have to send your the chip back to autothority and have them burn you a new one to match your set up (exhaust, cat bypass, light flywheel..)
now , what kind of chip you have on your car?? it sounds like a good one
iwas running a copy of a cup chip, made the car so much smoother and defenitly quicker.
authority MAF makes a big difference in power, i was very suprised when i drove a car with it.
now , what kind of chip you have on your car?? it sounds like a good one
iwas running a copy of a cup chip, made the car so much smoother and defenitly quicker.
authority MAF makes a big difference in power, i was very suprised when i drove a car with it.
Racer
Joined: Mar 2006
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From: Joplin, Mo
I use a Autothorty MFS and to get the best result you need to use the Autothorty chip.Other chips are setup for the barndoor air meter not the mass flow sencer.I dought the other performance chip would work with the Autothorty MFS.I get a pretty good kick at 4500 rpm.
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From: USVI
Originally Posted by Gus
Does any one know if you can change to another chip over having to keep the chip that came with the MAF iself?
Race Car
Joined: May 2003
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From: SoCal
"If there is no control unit the voltage levels that correspond to air-mass flow are converted using tables stored in the custom eprom."
Actually, there's no real conversion necessary, just a modification of the AFM fuel
maps for the MAF sensor.
Actually, there's no real conversion necessary, just a modification of the AFM fuel
maps for the MAF sensor.
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From: Peachtree City, Ga
Thanks to all for info - have to read and reread - First have an appointment to have the system checked with a local Porsche specialist - ( Jim - set adle as we talked about, also thanks for the note) - ( Jim - You had a primary by-pass and a cat as well?) still playing with it and will probably put on a dyno to see the difference (thks eggplant) here in the next week or so ) The power is there, seems to have more torque - just the kick-in has changed to a smoother accel. I think maybe a call to Authority (new name ?) may yield some insite(?) If they will talk about the MAF. Question - If the Authority chip witht he MAF has a custom table which is designed for the MAF input - this input over rides the standard table in the ECU and is read instead of the standard table - If I replace the Authority chip with another (trick/i.e. RUF) chip would the table in the new chip not over ride the table in the ECU also?? How does the ECU determine which table it will reference for control of the ingectors between the chip and what is programed into the ECU. I am jsut trying to understand how all this works - Thanks for the help and info
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From: USVI
Originally Posted by Lorenfb
Actually, there's no real conversion necessary, just a modification of the AFM fuel maps for the MAF sensor.
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From: Peachtree City, Ga
Jason - thanks for the additional expalination - the extra info helps greatly - When you say "external voltage level controller" is this the tempurature sensor that some companies don't put on or is this somethig totally different. In looking at the enternals and I know that this does not help one bit - there are two (2) small coils loaced in the internal sensor passage way which must take the readings -
I am not sure of the coil task - but could one measure the tempurature and the other the volume of air?? Thanks for sharing your knowledge
I am not sure of the coil task - but could one measure the tempurature and the other the volume of air?? Thanks for sharing your knowledge
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From: USVI
Originally Posted by Gus
When you say "external voltage level controller" is this the tempurature sensor that some companies don't put on or is this somethig totally different.
Originally Posted by Gus
In looking at the enternals and I know that this does not help one bit - there are two (2) small coils loaced in the internal sensor passage way which must take the readings -
I am not sure of the coil task - but could one measure the tempurature and the other the volume of air??
I am not sure of the coil task - but could one measure the tempurature and the other the volume of air??
