do lowers effect gas mileage
Outstanding HDF Member
Joined: Oct 2007
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I get the same either way and this is over 16000 miles with about 6000 on and 10,000off on my 2011 RGU. I can say comfort level is much better with them off and the head temp is lower with them off as measured with my TTS data.
I am curious why everbody has to ask what difference does it make? the guy wants to know so why do people have to ask why he wants to know? Just because it does not matter to you does not mean it does not matter to someone else. maybe he is going on a round the word trip and needs to go 300 miles between tank full, it aint aways about $ there may be other factors involved.
I am curious why everbody has to ask what difference does it make? the guy wants to know so why do people have to ask why he wants to know? Just because it does not matter to you does not mean it does not matter to someone else. maybe he is going on a round the word trip and needs to go 300 miles between tank full, it aint aways about $ there may be other factors involved.
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Road Captain
Joined: Jan 2010
Posts: 709
Likes: 2
From: SO Cal
Thanks everyone, I was asking the question because I just added lowers and noticed a drop in gas mileage. It was more then likely not the lowers but thought, what the hell I'll ask. OBTW it's not a money thing, it is about miles between fill-ups for me. I do a lot of back road riding and gas stations are far and few between. More then likely it's the new exhaust system and my twitchy right hand trying out the new power. did them both around the same time.
Last edited by iwillfixthem4u; Dec 4, 2011 at 12:02 PM.
Outstanding HDF Member
Joined: Mar 2010
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From: Chicagoland
Why does it matter to you if everyone wants to know?
Extreme HDF Member
Joined: Sep 2010
Posts: 14,744
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From: Phoenix '53, '88, '09 Big Twins
generally a less restrictive exhaust will increase MPG- but there are other factors-- such as a tuner if applicable.
I use XIEDs and noticed a slight drop in MPG, which is expected as I slightly richened the mixture- probably 1 or 2 MPG
I'm with you on the backroads- found myself in Utah BFE last year where my planned fuel stop was closed--- putted along at 45 MPH from there and managed to make over 242 miles from a 5 gallon tank on the Evo. ( after I'd hammered the first 120 miles) yikes!
mike
I use XIEDs and noticed a slight drop in MPG, which is expected as I slightly richened the mixture- probably 1 or 2 MPG
I'm with you on the backroads- found myself in Utah BFE last year where my planned fuel stop was closed--- putted along at 45 MPH from there and managed to make over 242 miles from a 5 gallon tank on the Evo. ( after I'd hammered the first 120 miles) yikes!
mike
Last edited by mkguitar; Dec 4, 2011 at 12:31 PM.
Tourer
Joined: Apr 2010
Posts: 403
Likes: 14
From: Tennessee
I just added a set of lowers to my bike, but haven't filled up since adding the lowers. I'll see what my experience is like compared to yours. I'm sure lowers DO effect mileage (either positively due to better aerodynamics, or negatively due to weight and drag), but I doubt we can really tell in day to day driving. Maybe if we had EPA testing equipment.....
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Road Captain
Joined: Jan 2010
Posts: 709
Likes: 2
From: SO Cal
generally a less restrictive exhaust will increase MPG- but there are other factors-- such as a tuner if applicable.
I use XIEDs and noticed a slight drop in MPG, which is expected as I slightly richened the mixture- probably 1 or 2 MPG
I'm with you on the backroads- found myself in Utah BFE last year where my planned fuel stop was closed--- putted along at 45 MPH from there and managed to make over 242 miles from a 5 gallon tank on the Evo. ( after I'd hammered the first 120 miles) yikes!
mike
I use XIEDs and noticed a slight drop in MPG, which is expected as I slightly richened the mixture- probably 1 or 2 MPG
I'm with you on the backroads- found myself in Utah BFE last year where my planned fuel stop was closed--- putted along at 45 MPH from there and managed to make over 242 miles from a 5 gallon tank on the Evo. ( after I'd hammered the first 120 miles) yikes!
mike
Road Warrior
Joined: Jun 2009
Posts: 1,687
Likes: 9
From: SoCal & West TN
Thanks everyone, I was asking the question because I just added lowers and noticed a drop in gas mileage. It was more then likely not the lowers but thought, what the hell I'll ask. OBTW it's not a money thing, it is about miles between fill-ups for me. I do a lot of back road riding and gas stations are far and few between. More then likely it's the new exhaust system and my twitchy right hand trying out the new power. did them both around the same time.
Then you rode harder and faster. lol
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Road Captain
Joined: Jan 2010
Posts: 709
Likes: 2
From: SO Cal
I have gotten my best MPG of 46.5 and my worst 36.5 since installing the exhaust. I think that on the open road it is way up and on the canyons @ 3 to 4 k rpm it is down. lots more power. It shipped with the wrong baffle Perforated wrapped and I ordered louvered wrapped. I think the louvered wrapped will improve torque down low. I will know this week. the 36.5 happened on the first tank after the lowers, but it was an all canyon ride and it was very windy.
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