VVT Delete
Road Warrior
Joined: Jul 2011
Posts: 1,630
Likes: 434
From: PA
Are you running the IWS? Why would fuelmoto risk their stellar reputation and back this product? Install and tune with this product?
Stellar HDF Member
Joined: Sep 2007
Posts: 2,459
Likes: 674
From: Vancouver Island B.C.
I've had conversations with both Ben (IWS) and Steve (GMR), both have said the traction control part of the IWS doesn't work. You'd have to ask Fuel Moto about that claim.
Last edited by Lonewolf176; Feb 27, 2026 at 08:09 PM.
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,156
Likes: 11,244
From: San Diego, CA
I have received a lot of help from Lonewolf on my recent used bike purchase with a TTS tune/tuner. I have used a Power Vision tuner since 2012 as a customer not a professional, and was completely ignorant of how the TTS tuner works. Lonewolf is a very knowledgeable tuner, and very well versed in the TTS tuner. He went out of his way to help me. I consider him a good and knowledgeable resource.
I have also been a FuelMoto customer for years. I have talked with Jamie about a few things over the years, and I find him to be extremely knowledgeable, with tons of experience. He is also very focused on satisfying his customers. I consider Jamie a good and knowledgeable resource.
Why Lonewolf and FuelMoto (Jamie) disagree on this issue is beyond the scope of my knowledge.
I have recently read of issues with both the Impact & Thundermax ECUs in some of the newest ('26?) bikes. I don't doubt those reports, but again, as a novice & nonprofessional tuner, I don't know the conditions causing the issues...
However, back in May of 2025, this very conversation came up in a thread about whether or not Impact ECUs will work with the RDRS on Harley bikes. This thread was on a Harley technical forum.
At that time, Jamie was involved in the thread. It was obvious that he was tuning RDRS bikes with the Impact ECU with success. He also didn't seem to think it was a big issue.
Things may have changed, or maybe not....
So I would suggest that anyone with questions about this should directly contact FuelMoto if they want fresh, and specific information on why they say the Impact ECU works with RDRS.
Stellar HDF Member
Joined: Sep 2007
Posts: 2,459
Likes: 674
From: Vancouver Island B.C.
Why Lonewolf and FuelMoto (Jamie) disagree on this issue is beyond the scope of my knowledge.
At that time, Jamie was involved in the thread. It was obvious that he was tuning RDRS bikes with the Impact ECU with success. He also didn't seem to think it was a big issue.
At that time, Jamie was involved in the thread. It was obvious that he was tuning RDRS bikes with the Impact ECU with success. He also didn't seem to think it was a big issue.
Maybe it's not a big deal for some, but why not keep the features you've paid for?
Road Warrior
Joined: Jul 2011
Posts: 1,630
Likes: 434
From: PA
When did you last talked to Ben? There has been updates, several times and I have everything working as it should..
Stellar HDF Member
Joined: Sep 2007
Posts: 2,459
Likes: 674
From: Vancouver Island B.C.
1 hour and 11 minutes with Steve Sunday night. Would have to dig a bit on last "chat" with Ben. Can you spin the tire?
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HD EFI Guru
Joined: Jan 2008
Posts: 4,488
Likes: 4,774
Look there is nothing new or fancy about the Impact ECM, it's an open source Speed Density ECM from rusEFI (40+ year old tech) that they have made a package around to plug into the bike and adapted for the HD. The software that tunes it is from another open source ECM called Mega Squirt, thats why it has the MS on the end of the name. Many of you may remember years ago (15+years) people were using Mega Log Viewer to look at the factory data, again nothing new or high tech about it. It's a fine ECM if you do not want all the functions to work properly and go racing with it, but it doesn't have the capability to handle everything the OEM ECM has to do, fact not fiction. They seem to still have engine running issues with them when traveling up and down in altitude or going from higher elevation cool conditions to Hot and dry conditions at lower elevations. These are all things that really do not matter to a racer thats going to be adjust the ECM all the time but a general rider that wants to travel the the country on his Touring bike, it sure as hell does.
