Would a K&N air filter improve WagonR's fuel efficiency?
By: Kumaresh Bhattacharjee on 13 september 2015
Putting a K&N filter might increase the mileage but the increase might be very insignificant. Install a new air filter if there is a need, instead run the car with correct tyre pressure, in correct gear without hard accleration and you should get a decent mileage from WagonR.
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