Re: 19.8mpg after HC removed!
Quote:
Originally Posted by MechEng1
As what on the title said an 19.8mpg has achieved after removing just the HC charcoal filter and using a stock air filter. Did not even shave the ribs inside the upper lid box. This has been only tested for under 100 miles, but I usually get around 18.3mpg before going 75mph on a highways. As far as acceleration, it got better response. And it has a bit throaty sound too.
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I believe it.
This has to be one of the best free mods you can do for mileage and power.
Just be aware that the ecm may try to fight you on this. I highly recommend disconnecting the battery to allow new long term fuel trims.
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2007 Tundra 5.7 4x2 RCSB slate metallic
2005 Corolla - all stock, cause it's the wifes
1986 Mustang GT - the stereo is under the hood 
1990 Corolla - cause it was really cheap
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