Thundermax MPG?????
Club Member
Joined: Feb 2007
Posts: 5,335
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From: Tidewater
RE: Thundermax MPG?????
My map is still self learning but my initial MPG went from 42 to 32 when I installed the TMax. Their Customer Service is top nootch and after talking to Pat I changed the map and reinitialized the module. So we will see what it ends up being after this week. Hope it increases but if it doesn't it still runs a whole lot better than it did with the SERT and a dyno, and I can tweak it myself without paying a tuner to get it where he wants it.
Road Captain
Joined: May 2007
Posts: 675
Likes: 0
From: Willis, Texas
RE: Thundermax MPG?????
I have an 07' Ultra, 4000 miles, with the Tmax Autotune and the RH True Duals. I got consistant 33 mpg. Most of my riding has been back and forth to work. About 5 miles 1 way, on a FM road 65 MPH 1 stoplight. In the spring took a roadtrip to Big Bend with V&H Ovals and stage one upgrade. Got 40-43. Bike runs great now with new exhaust and computer on it but would like a little better mileage. I am sure when I take it on my next trip I will get much better. T.
Tourer
Joined: Jul 2007
Posts: 443
Likes: 0
From: Washington,MI
RE: Thundermax MPG?????
ORIGINAL: poppa cooter
michigan, flat land riding,back roads, around 55mph most of the time.
michigan, flat land riding,back roads, around 55mph most of the time.
Advanced
Joined: Jun 2006
Posts: 54
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From:
RE: Thundermax MPG?????
I have an '07 RK Classic with a Thundermax installed. The map is for a stock bike, which it is. I average 40-45 mpg (more toward 45) either riding briskly one- up, or a bit more calmly with the better half on the back. This is in the Rockies. I don't recall seeing any drop in mileage with the Thundermax installation, but it sure does run better. Unfortunately, it didn't seem to help too much with the heat issue. Recently, I installed a K&N air filter, (stock filter was passing dirt) and that didn't seem to affect mileage at all. Bike has about 3,400 miles now.
Intermediate
Joined: Oct 2007
Posts: 31
Likes: 1
From:
RE: Thundermax MPG?????
ORIGINAL: planewrench
I have an '07 RK Classic with a Thundermax installed. The map is for a stock bike, which it is. I average 40-45 mpg (more toward 45) either riding briskly one- up, or a bit more calmly with the better half on the back. This is in the Rockies. I don't recall seeing any drop in mileage with the Thundermax installation, but it sure does run better. Unfortunately, it didn't seem to help too much with the heat issue. Recently, I installed a K&N air filter, (stock filter was passing dirt) and that didn't seem to affect mileage at all. Bike has about 3,400 miles now.
I have an '07 RK Classic with a Thundermax installed. The map is for a stock bike, which it is. I average 40-45 mpg (more toward 45) either riding briskly one- up, or a bit more calmly with the better half on the back. This is in the Rockies. I don't recall seeing any drop in mileage with the Thundermax installation, but it sure does run better. Unfortunately, it didn't seem to help too much with the heat issue. Recently, I installed a K&N air filter, (stock filter was passing dirt) and that didn't seem to affect mileage at all. Bike has about 3,400 miles now.
I would bet that after I get my ignition timing adjusted right, my fuel mileage will get back close to what it was. I do not expect it to get completely back though. That is because I believe that when it was getting such good mileage, it was also running too lean. Adding fuel is reducing the gas mileage, but it is also running it cooler which increases reliability.
Outstanding HDF Member
Joined: Apr 2005
Posts: 2,106
Likes: 12
From: SoCal
RE: Thundermax MPG?????
[quote]ORIGINAL: bigbluff
That's how mine is. Here at sea level in Los Angeles I get 35mpgs. Up in the Rockies I got 45mpgs. Riding slow on the range doing demos and giving Ride Like A Pro instruction I get in the low 30s. For me mpgs are all about where, and how I ride.
Mark
ORIGINAL: planewrench
My experience has been that anytime I go up to the Rockies (I live in Kansas) my mileage gets much better. Higher elevations improve it considerably.
My experience has been that anytime I go up to the Rockies (I live in Kansas) my mileage gets much better. Higher elevations improve it considerably.
Mark
Advanced
Joined: Jun 2006
Posts: 54
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From:
RE: Thundermax MPG?????
ORIGINAL: bigbluff
You mention that you are getting your mileage in the Rockies. My experience has been that anytime I go up to the Rockies (I live in Kansas) my mileage gets much better. Higher elevations improve it considerably. Before I installed my bigbore kit and was running a stock 88 cu in engine with Stage 1 intake/download, and Fullsac true duals, I was averaging 40 or so across the plains of Kansas. But up in the Rockies it would go up to the mid 50s. I have not been back to the Rockies with my bigbore (96 cu in) and TMax/AT, but I would suspect that since right now I am geting low 30s, it would go up into the mid 40s in the Rockies.
I would bet that after I get my ignition timing adjusted right, my fuel mileage will get back close to what it was. I do not expect it to get completely back though. That is because I believe that when it was getting such good mileage, it was also running too lean. Adding fuel is reducing the gas mileage, but it is also running it cooler which increases reliability.
ORIGINAL: planewrench
I have an '07 RK Classic with a Thundermax installed. The map is for a stock bike, which it is. I average 40-45 mpg (more toward 45) either riding briskly one- up, or a bit more calmly with the better half on the back. This is in the Rockies. I don't recall seeing any drop in mileage with the Thundermax installation, but it sure does run better. Unfortunately, it didn't seem to help too much with the heat issue. Recently, I installed a K&N air filter, (stock filter was passing dirt) and that didn't seem to affect mileage at all. Bike has about 3,400 miles now.
I have an '07 RK Classic with a Thundermax installed. The map is for a stock bike, which it is. I average 40-45 mpg (more toward 45) either riding briskly one- up, or a bit more calmly with the better half on the back. This is in the Rockies. I don't recall seeing any drop in mileage with the Thundermax installation, but it sure does run better. Unfortunately, it didn't seem to help too much with the heat issue. Recently, I installed a K&N air filter, (stock filter was passing dirt) and that didn't seem to affect mileage at all. Bike has about 3,400 miles now.
I would bet that after I get my ignition timing adjusted right, my fuel mileage will get back close to what it was. I do not expect it to get completely back though. That is because I believe that when it was getting such good mileage, it was also running too lean. Adding fuel is reducing the gas mileage, but it is also running it cooler which increases reliability.
Road Master
Joined: Sep 2007
Posts: 1,049
Likes: 1
From: Brookfield,Il.
RE: Thundermax MPG?????
I getting a slight tip in ping on a moderate acceleration. I have the cold start surge fixed and no to tweak the ping issue. I'm assuming the bike is still running a bit lean. Mileage is approx 36-38 range. So far I've ben pretty happy with the Tmax. I've been adding stuff on the bike in stages and then remapping and it's been great. Next is the 103 kit.