alvinado
Well-Known Member
OK guys I know this has been discussed until the cow come home but I would like to share some info I have noticed.
I picked up my 2006 e90 1 Month ago and was suffering from ridiculous fuel economy.
Stock air filters-previous owner told me there is 30k km on it.
All my test is based on a daily commute. 60/40 highway/city driving.
My FC was 7.4 km/l. Pretty bad for a 2 litre e90. So I set out to improve FC.
Change to new stock air filter and FC improved to around 8km/l, not too bad but still not to my expectations. So I decided to change my driving style on the same route. I am driving like a grandma now, on slopes I will let go of accelerator and blah blah blah, well you get it, I am now driving like a grandmother.
All I get from this is an FC of 8.4km/l.
Still not happy, I installed air scoops and a K&N filter. In theory, it should help FC because more cold air flows means that your fuel burns more efficiently and you should see an improvement. Let me tell you what I experienced from a layman's point of view. Upon installation, I found the the computer controlled gear shifts has changed a little. It now allows more revs up to the 4-4.5k range before shifting from 3rd to 4th gear. 1st and 2nd also has this change but less. Before that, gears would shift between 2k-2.5k. In short, I am getting more torque.
So to put the theory to the test, I started driving like a grandmother again and this is the results I wanna post.
View attachment 59262
10.9km/l lol! So I can conclude that equipment plus driving like a grandmother can improve FC. Before anyone come and say I stingy, yes I am. Lol. I believe to get the maximum efficiency out of any machine as I am an engineer by training. Lol.
Any thoughts on this brothers and sisters?
I picked up my 2006 e90 1 Month ago and was suffering from ridiculous fuel economy.
Stock air filters-previous owner told me there is 30k km on it.
All my test is based on a daily commute. 60/40 highway/city driving.
My FC was 7.4 km/l. Pretty bad for a 2 litre e90. So I set out to improve FC.
Change to new stock air filter and FC improved to around 8km/l, not too bad but still not to my expectations. So I decided to change my driving style on the same route. I am driving like a grandma now, on slopes I will let go of accelerator and blah blah blah, well you get it, I am now driving like a grandmother.
All I get from this is an FC of 8.4km/l.
Still not happy, I installed air scoops and a K&N filter. In theory, it should help FC because more cold air flows means that your fuel burns more efficiently and you should see an improvement. Let me tell you what I experienced from a layman's point of view. Upon installation, I found the the computer controlled gear shifts has changed a little. It now allows more revs up to the 4-4.5k range before shifting from 3rd to 4th gear. 1st and 2nd also has this change but less. Before that, gears would shift between 2k-2.5k. In short, I am getting more torque.
So to put the theory to the test, I started driving like a grandmother again and this is the results I wanna post.
View attachment 59262
10.9km/l lol! So I can conclude that equipment plus driving like a grandmother can improve FC. Before anyone come and say I stingy, yes I am. Lol. I believe to get the maximum efficiency out of any machine as I am an engineer by training. Lol.
Any thoughts on this brothers and sisters?
