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smart car owners forum model 451 fortwo - Discuss upgrades, modifications, ideas > smart car owners general chat forum > smart car general smart car chat forum > Aftermarket smart car air filters and the effect on MPG |
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smart car owners forum model 451 fortwo - Discuss upgrades, modifications, ideas > smart car owners general chat forum > smart car general smart car chat forum > Aftermarket smart car air filters and the effect on MPG |
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| Aftermarket smart car air filters and the effect on MPG | Rate Topic |
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| Posted: Thu Jun 25th, 2009 09:17 pm |
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1st Post |
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ALephart Administrator 
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I spoke a while back of an smart car add-on that got me another 1-2MPG in the city. I was hesitant to speak about it until my warranty had run out. I told everyone a few weeks ago that add-on was a BPP air filter. Some testing: With 25,000 miles on the odometer. All city driving. With the BPP air filter driving VERY conservatory I got 34.1 MPG. Driving what I would consider regularly I got 32.7MPG Curious I went and bought a new smart air filter and installed it. Driving regularly I got 32.8MPG on the first two tanks and it has slowly been dropping since then. My theory is that although the aftermarket air filter may flow more air it is the leaning out of the cars computer fuel trim tables that is providing the MPG improvement. All the best, Aaron Lephart
____________________ I got my smart car! |
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| Posted: Fri Jun 26th, 2009 02:32 am |
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2nd Post |
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DaveInTexas Member 
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How about the intake air scoop? Did you ever get it installed? If not, you may want to look for some of the 3M double sided adhesive mounts. When the XM radio first came out, it had some super strong adhesive for mounting the antenna. I was fortunate to get an extra piece and used it on a radio project. The display is still holding on strong after 5 years.
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| Posted: Fri Jun 26th, 2009 02:45 am |
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3rd Post |
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ALephart Administrator
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Never installed the scoop! It's a paint to match and there are better ones on the market now. This was a genuine EvilTwin part. Good idea on the tape. All the best, Aaron Lephart
____________________ I got my smart car! |
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| Posted: Wed Jul 8th, 2009 02:02 pm |
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4th Post |
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ALephart Administrator
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I decided to test out a new OEM smart car air filter versus my BPP filter element. In casual all city driving I got 35.7MPG. This tells me the engine is getting more broken in and loose or the effects of leaning out the fuel mixture with the BPP element have not been adjusted by the cars ECU. The next tank will truly tell. All the best, Aaron Lephart
____________________ I got my smart car! |
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| smart car owners forum model 451 fortwo - Discuss upgrades, modifications, ideas > smart car owners general chat forum > smart car general smart car chat forum > Aftermarket smart car air filters and the effect on MPG | Top |
