Honda uses MAP (speed density) and Porsche uses MAF?
#1
Honda uses MAP (speed density) and Porsche uses MAF?
I was just wondering why my 997tt uses an MAF (as do a lot of OEM manufacturers) and yet something as budget as a Honda Fit runs speed density.
I was under the impression that speed density setups were superior to MAF based systems. Given all the headaches and extra maintenance an MAF introduces into a system....I would imagine the Honda way would of been more commonplace.
Do Porsche race engines still use MAF based fuel injection?
I was under the impression that speed density setups were superior to MAF based systems. Given all the headaches and extra maintenance an MAF introduces into a system....I would imagine the Honda way would of been more commonplace.
Do Porsche race engines still use MAF based fuel injection?
#2
Porsche moved away from using MAF sensors on the 997.2. Airflow is entirely modeled and not true coming off a sensor. They only use TMAP sensors. 997.1 and earlier are MAF based but you can tune with speed density instead.
#4
We wouldn't charge but its best to let your tuner know that you'd like to do a MAF-less tune ahead of time. Having said that on a 997 the stock airbox is a great design so getting rid of them isn't necessary and you're actually better off having them for true airflow readings. We still happily run them with our A3076s
#7
the dual setup is usually using the map sensor for boost control....the ecu/dme is still using MAF for fuel injection purposes. That is why leaks in system cause so many issues. In MAF setup the air was already recorded as having come into the system...so when it leaks out before combustion its just bad.
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#8
Interesting to know...
So my car and other protomotive tuned cars which run with fenderwell intakes operate with a gimped boost control? So if I were to switch to cobb tuning for any reason, boost control would still be very limited?
So my car and other protomotive tuned cars which run with fenderwell intakes operate with a gimped boost control? So if I were to switch to cobb tuning for any reason, boost control would still be very limited?
#11
Thanks. Its unfortunate the misinformation that has been "released" about mafless tuning.
A few years ago we felt the pressure to release "mafless" tunes. At this point if would rather lose a sale over it then to do something I know is not the correct why to get it done.
A few years ago we felt the pressure to release "mafless" tunes. At this point if would rather lose a sale over it then to do something I know is not the correct why to get it done.
Last edited by proTUNING Freaks; 02-26-2015 at 10:03 AM.
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