mullens Posted April 26, 2011 Report Share Posted April 26, 2011 Has anyone has noticed a gas mileage decrease just by adding a larger throtte body? It would make sense because the ECM dumps in more fuel to compensate for the increased airflow. I think it would be more noticable in city driving. I'm just wondering if it's significant/noticable. Link to comment Share on other sites More sharing options...
Dubbs Posted April 26, 2011 Report Share Posted April 26, 2011 Has anyone has noticed a gas mileage decrease just by adding a larger throtte body? It would make sense because the ECM dumps in more fuel to compensate for the increased airflow. I think it would be more noticable in city driving. I'm just wondering if it's significant/noticable. I went from stock to L&M72...I haven't noticed a decrease in mileage, but i noticed an increase of power Link to comment Share on other sites More sharing options...
JWG223 Posted April 28, 2011 Report Share Posted April 28, 2011 Slower intake air velocity at lower rpms will cost power at those rpms. It's not just about flow, velocity matters, too. Link to comment Share on other sites More sharing options...
minnesotalee Posted April 29, 2011 Report Share Posted April 29, 2011 I went from stock to L&M72...I haven't noticed a decrease in mileage, but i noticed an increase of power Hi- Did you also do a pulley change? Dynoed before/after for your mods; I am putting together a spreadsheet for we Shelby owners of the 2010/2011. Thanks for input. Minnesotalee Link to comment Share on other sites More sharing options...
Dubbs Posted April 30, 2011 Report Share Posted April 30, 2011 Hi- Did you also do a pulley change? Dynoed before/after for your mods; I am putting together a spreadsheet for we Shelby owners of the 2010/2011. Thanks for input. Minnesotalee no pulley change TB+Plenum+JLT+airaid= 26rwhp Link to comment Share on other sites More sharing options...
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