Fuel mileage

tsp45acp · Sep 28th, 2008, 12:31 AM

Completely stock 08 Sporty 1200C.

Worst was 36 mpg, but it was throwing a check engine code (some wire in my ecm had popped out--the green one w/white stripe)---just got the 1000 mile service done today.

Previous w/o the check engine light was 43-46 mpg. Mostly around town 4th gear driving and often weekend errands with the wife on back.

Impatiently waiting to get a real weekend run (poker or other event) to see what it really gets out on the road.

Added a windshield last weekend so I'm wondering what additional diff that's going to make. Tracy

DDogg · Sep 28th, 2008, 08:19 AM

2008 96 FatBob
Just had my 1000 mile service done.
Will do Stage 1 next spring.
Average so far is 45 mpg.
Mostly 3 and 4 gear city driving.

07FLHX · Oct 17th, 2008, 02:01 PM

2007 Street Glide Patriot Edition
19000 miles
SE Air cleaner
SE Slip ons (original not the new ones)
SE Race Tuner
Around town average 42-45 mpg (depending on how much fun I have )
Highway 48-55 mpg

biglew55 · Oct 17th, 2008, 02:11 PM

I have a '04 Ultra and usually set my cruise at 74 mph according to the GPS. Stage I A/C and SE slash cut pipes.

Solo I get around 42 MPG(39-45 depending on the wind)
2up Drop by about 2-3 MPG

If is go any faster they drop in a hurry!

NEWHD74FAN · Oct 18th, 2008, 02:06 AM

Quote:

Originally Posted by smitty901

07 RG 96cc with Xied's installed other wise stock 40. ride a higher speeds 70 and above
42 without Xieds
42-47 without Xied's a ride slower 55-65mph

Smitty...! >70? Keep checkin' the rear vue for the red bubblegum light...

Whats that...Osofer...I really am sorry to interrupt your donut break...!

Seriously, I get 47mpg mixed mainly in 70% City 30% Hwy driving.

Stage I , S&S type A/C - Carb jetting & #4 Washer - DragS pipes w/Baffles
Motul Syn Motor Oil - Spectrol Gold 85W Clutch/Tranny/Chain Lube
Metzler 880H Tires 100/90H19 Front, 150/80H16 Rear

stevewaxy · Oct 27th, 2008, 05:26 PM

1999 FLHTCUI I got between 40 and 50 when it was new...
BUT
now only 25 to 40 ...

of course the 25mpg comes when I am on the highway doin a steady 80mph

it has EFI but it also has over 100k on it

NEWHD74FAN · Oct 27th, 2008, 06:15 PM

Quote:

Originally Posted by stevewaxy

1999 FLHTCUI I got between 40 and 50 when it was new...
BUT
now only 25 to 40 ...

of course the 25mpg comes when I am on the highway doin a steady 80mph

it has EFI but it also has over 100k on it

Do older EFI equipped bikes get that poor fuel mileage? I just got back from doing an 800 mile loop to Northern California...did 75+ and got 54 MPG...(first time I got to really take my 2004 XL1200RS carbureted model with all freeway miles, (typically get 48MPG mainly city).

Have you checked & changed your plugs and did some "Throttle Chops/Plug Inspections" per Glider' piece on the subject to see how your plugs/mixture is doing? You also may have dragging brakes or really get on it like a jackrabbit to get it down that low?

glider · Oct 27th, 2008, 06:25 PM

MPG is relative to speed, the faster you ride, the MPG goes down. Ideally the best MPG should be at about 55-60 MPH except for the 6 speeds.

NEWHD74FAN · Oct 27th, 2008, 06:45 PM

Quote:

Originally Posted by glider

MPG is relative to speed, the faster you ride, the MPG goes down. Ideally the best MPG should be at about 55-60 MPH except for the 6 speeds.

So does that mean his Harley is okay with a low 25 and high 40? Just seems awful low...just curious!

glider · Oct 27th, 2008, 07:14 PM

25 is a bit low but the 40 is a respectable number.

Sep 28th, 2008, 12:31 AM	#31
tsp45acp Play The Throttle Ride: 2008 Sportster XL1200C Join Date: Aug 14th, 2008 Location: Greensboro NC Posts: 199	Re: Fuel mileage Completely stock 08 Sporty 1200C. Worst was 36 mpg, but it was throwing a check engine code (some wire in my ecm had popped out--the green one w/white stripe)---just got the 1000 mile service done today. Previous w/o the check engine light was 43-46 mpg. Mostly around town 4th gear driving and often weekend errands with the wife on back. Impatiently waiting to get a real weekend run (poker or other event) to see what it really gets out on the road. Added a windshield last weekend so I'm wondering what additional diff that's going to make. Tracy

Sep 28th, 2008, 08:19 AM	#32
DDogg Community Star Ride: 2008 Fat Bob Join Date: Aug 30th, 2008 Location: Clinton Twp. Michigan Posts: 602 My Mood:	Re: Fuel mileage 2008 96 FatBob Just had my 1000 mile service done. Will do Stage 1 next spring. Average so far is 45 mpg. Mostly 3 and 4 gear city driving.

Oct 17th, 2008, 02:01 PM	#33
07FLHX New Family Ride: 07 FLHX Join Date: Oct 14th, 2008 Location: Maryland Posts: 8	Re: Fuel mileage 2007 Street Glide Patriot Edition 19000 miles SE Air cleaner SE Slip ons (original not the new ones) SE Race Tuner Around town average 42-45 mpg (depending on how much fun I have ) Highway 48-55 mpg

Oct 17th, 2008, 02:11 PM	#34
biglew55 Community Guru Ride: 2009 FLHX Join Date: Oct 1st, 2008 Location: IA Posts: 2,151 My Mood:	Re: Fuel mileage I have a '04 Ultra and usually set my cruise at 74 mph according to the GPS. Stage I A/C and SE slash cut pipes. Solo I get around 42 MPG(39-45 depending on the wind) 2up Drop by about 2-3 MPG If is go any faster they drop in a hurry! __________________ "Dream as if you'll live forever. Live as if you'll die tomorrow." - James Dean Ride it hard and ride it far!

Oct 27th, 2008, 05:26 PM	#36
stevewaxy New Family Ride: 1999 Ultra Classic Join Date: Oct 27th, 2008 Location: Deltona Florida Posts: 4 My Mood:	Re: Fuel mileage 1999 FLHTCUI I got between 40 and 50 when it was new... BUT now only 25 to 40 ... of course the 25mpg comes when I am on the highway doin a steady 80mph it has EFI but it also has over 100k on it

Oct 27th, 2008, 06:25 PM	#38
glider Community Liaison Ride: 07 Road King Classic Join Date: Jun 21st, 2007 Posts: 20,467 My Mood:	Re: Fuel mileage MPG is relative to speed, the faster you ride, the MPG goes down. Ideally the best MPG should be at about 55-60 MPH except for the 6 speeds. __________________ Psssst! Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. click me!>>Self Help Information and Tips<< click me!

Oct 27th, 2008, 07:14 PM	#40
glider Community Liaison Ride: 07 Road King Classic Join Date: Jun 21st, 2007 Posts: 20,467 My Mood:	Re: Fuel mileage 25 is a bit low but the 40 is a respectable number. __________________ Psssst! Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. click me!>>Self Help Information and Tips<< click me!

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Fuel mileage

Engine, Fuel and Exhaust