Quote:
Originally Posted by jinjur
OK.............so say for example that i unplug the MAF or the EGR........i know they will throw a code but would the car be faster/more fuel efficient if either is not operating at 100%?
How does the car know the air flow?
Does it just run of a set of pre programmed figures on the ECU?
Regards
Andy
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The MAF (Mass Airflow Meter or German equivalent) does exactly that - measures the airflow and affects fueling. The EGR (Exhaust Gas Recurculation valve) is an emissions control device, not related to economy - not sure how you would 'disconnect' or bypass this, even if you wanted to.
The car shouldn't be faster/more fuel efficient with either disconnected/bypassed. Both are integral to the engine running as it should. Faults with either would end up with the engine running badly (you'd notice it if either were faulty) and/or fault codes.