Thinking of selling MAF
07-09-2005, 07:15 AM
#61
Instructor
John wrote:The TEMP changes problems are NOT related to the MAF. They are related to the improper software you are using, and to the fact that you do not have or an improperly operating IAT (Intake Air Temp).
The MAF software must handle the temp changes differently that the AFM software (I have been saying this for few years now).
Try a MAP, and if you think few changes when the temp changes annoys you, you will be back to MAF in no time.
I have seen this so many times! People always go to the cheaper product, then when not happy they switch to what they should have gotten in the first place.
Your options: Install a Intake Air Temp, get proper software for your MAF. Not trying to sell you a chip, HR MAF are not ones I like to work with.
On paper Map is best solution: no moving parts, no wear out
951 Motronic was designed work with afm and nothing else but afm
Remember: BOSCH 1st Motronic Porsche 951.
Motronic doesn't care what sensor measures it cares about delivered values
because motronic takes those valus for its calculations - so every value has a
meaning: f.e. X volt means N air -
The MAF software must handle the temp changes differently that the AFM software (I have been saying this for few years now).
Try a MAP, and if you think few changes when the temp changes annoys you, you will be back to MAF in no time.
I have seen this so many times! People always go to the cheaper product, then when not happy they switch to what they should have gotten in the first place.
Your options: Install a Intake Air Temp, get proper software for your MAF. Not trying to sell you a chip, HR MAF are not ones I like to work with.
On paper Map is best solution: no moving parts, no wear out
951 Motronic was designed work with afm and nothing else but afm
Remember: BOSCH 1st Motronic Porsche 951.
Motronic doesn't care what sensor measures it cares about delivered values
because motronic takes those valus for its calculations - so every value has a
meaning: f.e. X volt means N air -
07-10-2005, 06:11 PM
#64
Turbinek - no.
Vitesse has altered the software to CORRECTLY use an MAF.
The 951 Motronic does not work well with MAP becuase there is no flow information.
You will NEVER, EVER see a high horsepower Motronic 951 with either a MAP, or an MAF using an altered signal AFM chip. Doesn't work well enough to make HP levels that are not laughable in 2005 with 2.5 liter engine.
By the way - John is cliff-diving in Acapulco.
Vitesse has altered the software to CORRECTLY use an MAF.
The 951 Motronic does not work well with MAP becuase there is no flow information.
You will NEVER, EVER see a high horsepower Motronic 951 with either a MAP, or an MAF using an altered signal AFM chip. Doesn't work well enough to make HP levels that are not laughable in 2005 with 2.5 liter engine.
By the way - John is cliff-diving in Acapulco.
07-13-2005, 03:05 PM
#66
Instructor
O.k. I read the 951 manual that reports at full throttle AFM signals 4.6 Volt to DME. The AFM has two sensors (that is why there are 4 wires) 1st NTC1 -> Tempsensor 2nd AFM -> airflow signal in Volts.
As far I see no reason why other sensors than AFM shouldn't work.
As far I see no reason why other sensors than AFM shouldn't work.
07-13-2005, 04:29 PM
#67
Drifting
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They will as long as it's calibrated poperly. With John's MAF the chip cantains the proper calibration for his specific MAF. With any other chip/maf setup and a signal massager it's a bit of a guessing game until you spend all day and $700 on the dyno.
07-13-2005, 08:09 PM
#68
Three Wheelin'
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Originally Posted by eniac
With any other chip/maf setup and a signal massager it's a bit of a guessing game until you spend all day and $700 on the dyno.
