Originally Posted by SECS
MAP can be as accurate a MAF if set up correctly.
Chip is right, a MAF equipped car will adjust to changes such as cams
air filters, porting etc... (to a limit)
MAP sensors are used as they are cheaper to buy and install.
MOST cars that have MAF will have a MAP sensor aswell if turbo charged
such as the escort cossie small turbo.
(Some early scoobys and evo's dont have both and only have a MAF)
MAF sensors restrict airflow to the engine.
MAF sensors have an ultimate airflow/BHP limit due to these restrictions.
At the end of the day, either sensor will produce near identical results
if set up correctly but only directly control the cars fuelling 50% of the
time anyway due to transient changes in load.
My personal choice will be MAP every time for turbo cars !
hmmm.....surely MAP can only be as accurate if the car stays at the same height (above sea level)
Map sensors accuracy will deviate as a car goes up a hill (i mean a big one lol). MAF will always compensate for this as it measures the mass of the air. Thats why manufacturers (especially japs because of their environment) tend to use MAF sensors.
Or so i would imagine.
For tuning, you couldnt give a flying fuck about emissions.....power all the way, which means you go for a MAP sensor.
