IS F (2008-2014) Discussion topics related to the IS F model

gas mileage with Borla

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Old 07-18-17, 04:33 PM
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newgsman
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Default gas mileage with Borla

Not sure if I am just hitting the go pedal more often with Borla but it seems that my gas mileage has dropped 10-15%. Anyone else notice a difference? I think low speed driveability has changed with Borla and it seems the lower restrictive exhaust means the car requires more fuel in city stop/go traffic. The exhaust also causes higher fuel consumption because you are wind out the motor just to hear the downshift rev matching sounds... Any comments, experiences?
Old 07-18-17, 05:39 PM
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JPxMODz
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I've also noticed my gas mileage has suffered since upgrading to the Borla. But I'm not sure if it's due to exhaust or my IS-F never leaving sport & manual mode
Old 07-18-17, 07:56 PM
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MileHIFcar
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I don't remember any degradation of gas mileage with the Borla when installed?? I still average 19-21 mpg all the way round with my set-up.
Old 07-18-17, 10:34 PM
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Wow...I avg 14-15 mpg
Old 07-18-17, 11:23 PM
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drifto
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Wow I only average 15 MPG all city driving.
Old 07-19-17, 07:58 AM
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LexusfanVA
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I haven't noticed any dips, if anything it should improve as long as you aren't on the go pedal all the time. In normal commuting I avg about 20-21, make it to 300 miles or so before the gas light comes on. My trip this weekend around 5 hours round trip with 2 passengers and thru mountains and with AC on I avg'ed 24.5 and got ~350 miles before light came on. Lots of traffic in there also. My first couple weeks with bola i certainly kept it in sport mode a lot more to avoid the drone and hear it bark, but now it's just every once in a while.
Old 07-19-17, 11:26 AM
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Its the increase of throttle..

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Old 07-19-17, 01:13 PM
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yeah I notice no decrease in mileage except for having more foot to pedal after exhaust upgrade lol
Old 07-19-17, 02:43 PM
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Originally Posted by Meraki Autoworks
Its the increase of throttle..

-Josh
This hahaha
Old 07-19-17, 05:33 PM
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blckbrd
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Originally Posted by Lmood
This hahaha
hahaha
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