Vance & Hines Reveals FP4 Engine Control Module Tuner

Vance & Hines is an American company that’s one of the most famous names for aftermarket performance accessories. Its portfolio comprises everything from air filters to exhaust pipes, and the latest addition is an engine control module (ECM) called the FP4. For now, the FP4 will be compatible only with Harley-Davidson Touring and Softail models.

In its press release, the company has mentioned that the FP4 brings optimum control and performance as its the only app-driven tuner in the market. 

The Vance & Hines FP4 on a white background

“We know riders want the best setup for their Harley-Davidson, just like we do for our race bikes,” said Vance & Hines President Mike Kennedy. 

“Think about it, the bike’s stock ECM is set for stock exhaust and factory air intake. When you make changes, like adding a different exhaust or air intake, you need the right tune to get the full performance potential out of your engine.” 

What the FP4 does isn’t necessarily groundbreaking stuff. It enables the ability to dial in the motorcycle’s ECM tune to match the performance upgrades on a bike. However, this is one of the few systems to make switching between tunes on a Harley this easy — owners of the FP4 can choose from a vast library of Vance & Hines maps and further develop those maps with several customization options found in the FP4 app. Typically, this would require plugging your ECU into a laptop and using dedicated software to tweak the maps. 

The Vance & Hines FP4 app on a smartphone on a white background

The Vance & Hines FP4 is slimmer and more compact than its predecessor, the Fuelpak FP3, which came with a smartphone app. However, the company claims it has made significant updates to the app interface allowing for a much smoother user experience. Vance & Hines says, “The Live Data capability of the app includes a new gauge layout and delivers more data to the rider than any other ECM tuner on the market.”

The press release also mentioned that “The new Performance Data feature is a data logger that allows users to go for a ride, then study the data collected from that ride. This feature also uses the built-in GPS from the rider’s phone to map out and store the ride route, allowing riders to analyze and compare the data collected to the actual road and highway situations at the time.”

A rider on a Harley Davidson Softail riding down a street

The app also allows users to upload their data and have it looked at by the company’s technical support. 

“With FP4, it’s as simple as connect, tune, ride. That’s the mantra that guided us in developing the next generation of our industry-leading ECM tuner,” Kennedy said. 

“The FP4 is the most intuitive, easy to understand, rider-friendly tuner in the market, and we’re really proud of that.”  

As mentioned above, the Vance & Hines FP4 is compatible only with 2021 and 2022 model year Harley-Davidson Touring and Softail motorcycles, priced at a reasonable $459.99.

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  1. You failed to say the app for the iPhone bricks your Bike. Do not use this product was released without software support. Vance and Hines is loosing a lot of customers over this debacle. I was told to get a Samsung phone , so now I have a 21 street glide stuck in limp mode. Stay away DO NOT BUY AND INSTALL

  2. Can you tell me if there is an fp4 available yet for my UK spec 2014 Harley-Davidson Softail FATBOY? I do not want to purchase an fp3 if there is a better/more up to date fp4 going to be released in the UK for my year/model bike in the near future. Regards Frank-G.

  3. The app for Iphones still only works 20% of the functions. Only thing it does is let you load tune of your exhaust but will not let you read/see fuel maps at each RPM. Andriod phones work only 50% of the functions if that. The big issue is there is no Autotune function on either app and the decel pop option is not even there like Vance & Hines sells you to purchase this tuner. The product was released and does not work. It has been months now and still no fix. If you call them one person tells you yeah it is working and you try it and it don’t so you call back and another guy says our tech people are working on it it does not work. They will not replace or give money back even though the $450 paper weight does not work. Put the word out for people not to buy this. It is a waste of money right now and no one knows when or if it will ever get fixxed.

  4. FP4 does Still as of 23 May 2022 does not work. It only has 10% function on iphone users and maybe 40% on Andriod users. No AutoTune option, No decel popping option, And of course RDRS will not work in the tunes once flashed. Not a worth the mon ey and they will not send your money back after lying to you about sure it all works. Once you marry it to your bike you just have to wait and hope they finish fixxing the FP4 tuner or buy something else. This unit has been out for months now with promised updates and is not fixed and should not have been sold/out on the market because it is not working.