Thundermax MPG?????
Thread Starter
|
Tourer
Joined: Aug 2007
Posts: 466
Likes: 0
RE: Thundermax MPG?????
yeah i like the tmax also, just want better mpg, but if i got my choice of more mpg and alot of popping(lean) i guess im just gonna have to run rich the 4.5 firmware didnt seem to do a whole lot for my bike, one thing i found to help decel pop is on every cruisingrpm afr page at 0 rpm start off at 11.5 afr and let it climb back to 13.8 very quicky so when the throttle is let off it gets a quick jolt of gas to stop the pop and as soon as you turn the throttle it leans back out.
Banned
Joined: Feb 2007
Posts: 279
Likes: 0
From:
RE: Thundermax MPG?????
Are you utilzing the decell fuel cutoff rpm low and the decell fuel cutoff rpm highfeature of the new firm ware? I set my low setting at 1280 rpm and the high setting at 3072 and I no longer have any decel popping.
This feature cuts off the fuel when you close the throttle at the high rpm you program in and the fuel cuts back inat the low rpm you program in. You'll find this feature under the Tuning maps heading then click on module configuration and then click on basic settings. You can then change the settings for the high and low rpm fuel cutoff to what ever rpms your bike startsand stops decel popping. Bike runs very strong.
This feature cuts off the fuel when you close the throttle at the high rpm you program in and the fuel cuts back inat the low rpm you program in. You'll find this feature under the Tuning maps heading then click on module configuration and then click on basic settings. You can then change the settings for the high and low rpm fuel cutoff to what ever rpms your bike startsand stops decel popping. Bike runs very strong.
Seasoned HDF Member
Joined: Jan 2006
Posts: 11,463
Likes: 2,990
From: Charleston, SC
RE: Thundermax MPG?????
Not to hijack...
It must take some time to get used to purposely typing and being seriousin a super-exaggerated Sourthern drawl.
It's funny (I know thats what you're after
) I'm not knocking ya..It's actually very impressive.
You remind me of that pirate dudein thatDodge Ball movie.
lp
It must take some time to get used to purposely typing and being seriousin a super-exaggerated Sourthern drawl.
It's funny (I know thats what you're after
) I'm not knocking ya..It's actually very impressive.You remind me of that pirate dudein thatDodge Ball movie.
lp
ORIGINAL: TexasRedneck
Kinda hard ta help ya any further, since thar's no indication of whar yer from, etc....sometime's locale has somethin' ta do with it, too.
Kinda hard ta help ya any further, since thar's no indication of whar yer from, etc....sometime's locale has somethin' ta do with it, too.
Stellar HDF Member
Joined: Jan 2007
Posts: 3,447
Likes: 163
From: Northern VA
RE: Thundermax MPG?????
Getting 32 mpg around town (35 mpg on highway)on a 103" with Zippers Hi Flow A/C, RH TD's with performance baffle, SE 50mm throttle body and SE Pro Twin Cam Heads at 12' ASL in VA Beach.
Elite HDF Member
Joined: Apr 2005
Posts: 3,542
Likes: 2
From: Oahu, Hawaii
RE: Thundermax MPG?????
I get 48 mpg if I keep the bike around 60-65 mph otherwise it lowers to the low 40's. I'm still tweeking mine a bit to get the timing where I want it but she runs damn strong as is. Made the below numbers on the dyno too.
Ultimate HDF Member
Joined: Dec 2006
Posts: 8,961
Likes: 263
From: Conroe Texas
RE: Thundermax MPG?????
Just an update, I have put a couple hundred more miles since the Zippers tech tuned the bike in Daytona, still no pinging more power and MPG up to 39 now, setting out on a trip in the morning, Miami to Meancitycycles to Ft Bragg to Deals Gap back to Miami, 2200 miles or so. Will report performance when I get back. UltraKla$$ic the map is on the way tonight.
Outstanding HDF Member
Joined: Apr 2006
Posts: 2,395
Likes: 25
From: St George, UT
RE: Thundermax MPG?????
I am a bit bewildered on this issue. My stock 07 is averaging 42mpg at 75, closer to 44 at or below 70. It pulls really well, with no ping whatsoever even below 2000 rpm. Doesn't run hot enough to complain, though I did just add the midframe heat shields for good measure. It was built in June this year. I asked the service department at my dealer if they did any special work before delivery and they said no, and they can't anyway.
I am not inclined to touch the motor or exhaust system to increase performance for fear of screwing it up.[sm=Awwww.gif]
I am not inclined to touch the motor or exhaust system to increase performance for fear of screwing it up.[sm=Awwww.gif]
Road Captain
Joined: Sep 2007
Posts: 656
Likes: 1
From: TN & FL
RE: Thundermax MPG?????
I've been getting 49.5 mpg on the highway, running stock with no issues or problems.
I still plan on Thundermax auto-tune, 2-1 pipes, and AN A/C sometime soon, so it sounds like I can expect a dramatic drop in gas mileage, huh?
I still plan on Thundermax auto-tune, 2-1 pipes, and AN A/C sometime soon, so it sounds like I can expect a dramatic drop in gas mileage, huh?
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
Ultimate HDF Member
Joined: Dec 2006
Posts: 8,294
Likes: 33
From: Po-Dunk Looziana
RE: Thundermax MPG?????
ORIGINAL: masterblaster
Just an update, I have put a couple hundred more miles since the Zippers tech tuned the bike in Daytona, still no pinging more power and MPG up to 39 now, setting out on a trip in the morning, Miami to Meancitycycles to Ft Bragg to Deals Gap back to Miami, 2200 miles or so. Will report performance when I get back. UltraKla$$ic the map is on the way tonight.
Just an update, I have put a couple hundred more miles since the Zippers tech tuned the bike in Daytona, still no pinging more power and MPG up to 39 now, setting out on a trip in the morning, Miami to Meancitycycles to Ft Bragg to Deals Gap back to Miami, 2200 miles or so. Will report performance when I get back. UltraKla$$ic the map is on the way tonight.
Thread
Thread Starter
Forum
Replies
Last Post
