Originally Posted by SS53
Hi Suryaputhra! Yesterday I went to MASS to get my Wagon R serviced. The SA told me that they cannot adjust the mileage in the new MPFI cars [Wagon R included] like they used to do in cars having carburettors because everything is controlled by ECM and sensors. Is it true?
There must be some way to adjust the ECM. What are your expert comments on the above.
Yes in MPFI cars you can not adjust mileage, there are other after market ECM remapping procedures are there but they are not advisable. If you feel you are getting low mileage you can try below procedures.
1. Make sure ignition timing is within the specification
2. Spark plugs are clean and gap is with in specification
3. Check error codes related to oxygen sensors, Catalytic converter, Electronic throttle valve.
4. You can clean electronic throttle valve.
6. Change air filter.
7.check A/F ration in OBD 2 scanner.