Thunder Max Tuner
Road Master
Joined: Sep 2006
Posts: 1,233
Likes: 988
From:
That's the advantage of the thundermax - you put in an initial "close" map, ride the bike, and it tunes itself.
Tourer
Joined: Aug 2022
Posts: 282
Likes: 129
From: Palm City, FL
The Power Vision and other products will do that too. This assumes the OP wants do it himself.
Stellar HDF Member
Joined: Sep 2020
Posts: 2,428
Likes: 2,869
From: Southeast
I put one on a 2021 street glide for a guy. I tried talking him into a power vision. I'd never used a thundermax and I have used the power vision working with fuelmoto. He was convinced the thundermax was the better deal because it came with the wide band sensors...I tried...I really did lol. So he gets the thundermax from fuelmoto and brings it to me and I put it in the bike. Went smooth enough, didn't like the length of the o2 lead for the front sensor because it left the connection right in front of the oil pan under the bike. Its kinda exposed if you ran something over. To the real point ...the only map support for the new bikes with the new ecm is through thundermax themselves. Fuelmoto has no maps developed for it. It's possible that has changed in the last 2 months, since I did the install, but it's definitely something to be aware of. I think there 2 or 3 different maps on the thundermax site to choose from. I was told to use one that was similar and to auto tune. This guy was a picky pain in the *** and complained about hardstarts, fuel mileage, motor noises. He had a 131 installed with Rhinehart system. I will say the guys at thundermax are great to work with and were very helpful and were always quick to respond with map changes or answers to questions. The way that data logs are sent and then updated maps are retrieved is so easy I honestly thought I messed it up. He ended up finding a dyno tuner that could tune with thundermax and he says it runs perfect now. Not sure if it does or not but I'm just happy I'm off the hook because he was the most difficult person I've ever dealt with...ever!!! Hope that helps lol
The Tmax will auto-tune to what the canned map says your A/F ratio should be. But that doesn't mean your "tune" is optimized for your bike. Likely it isn't. When I was tuning on my Road King, I wondered why they had the A/F ratio set to go pig rich at zero throttle on decel at higher RPM. I know they have a way to cut fuel on decel, so why go pig rich? Go into ANY map Tmax offers and see if this isn't so. I changed a bunch of stuff in the A/F ratio maps and feel I was rewarded with a cooler, better running, snappier, more fuel-efficient engine. I also gave it several degrees of timing lower in the RPM range and it responded very favorably.
I hear a lot about cutting back timing at idle and giving it more fuel to cool the engine, but IMHO, that only dumps extra unburned fuel into the exhaust -- blue pipes? I bumped the timing and reduced the fueling and felt I had a snappier engine right off idle and the engine never got "hot", even in Florida.
Tmax will do pretty well for the one who wants to download a map and enjoy the benefits of wide-band, full-time tuning. The world really begins to open up for those who commit to learning about the system and how to optimize them to their specific bike. Anyway, after working on the tune for my application, I felt I had the bike running very well. So well I ditched thoughts of going to a big bore for the time being. Do I recommend it? Yes. But it's not the product's fault if you choose not to use it to its full potential. IMHO.
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