Vance & Hines Fuelpak FP4 ECU Tuner Review 

Find more power with the Vance & Hines Fuelpak FP4 ECU Tuner today! rvz.la/3TbQdpx

I have the FP3 on my 2017 Dyna Low Rider S. I love its versatility. It sounds like the FP4 is a lot more limited than the FP3. The FP3 has mapping for not only exhaust and air cleaner, but also for different size cams. The steeper price tag also seems crazy, since it only gets you a slimmer design and faster downloads and uploads. If this is the case, I would recommend the FP3 over the FP4 if it is still available.

I had a problem with hesitation and backfiring once in a while. I changed the obvious. Old timer told me to change the battery. I thought it needed a tuner… took it to a shop and they had knowledge and called me a few hours later. Broken power wire coming from the battery.

I just flashed my 2023 Harley FreeWheeler trike with fp4. Tuner made a big improvement. More torque down low ,throttle response is a lot better. Trike runs cooler. I is a happy Boy. Trike is factory,Standard.

I have a 2021 Street glide Special. I installed the FP4 and it will not let you change the throttle response and Decell Pop.

Do you know of any that can be used on apple carplay. It would be way better if it was mirrored from my phone to my screen.

Can I remove my speed limiter with this?

Would auto tune not properly tune the engine if you were to do a cam/big bore kit?

Hello, is there any 2022 sportster s available ? Thanks

I have Harley cruise control an my 21 Softail, Any issues concerning that?

Does it work on a 2014 Harley Davidson Electra Glide Ultra Classic 103 engine?

I just seen an add for this yesterday and they were on sale. Didn't know anything about them so didn't buy but now it looks like I should have.

Will it work a Bone Breaker Performance 2 into 1 Exhaust?

Will this improve throttle response on a 2007 hd SOFTAIL custom with stage 1

I talked to a builder that told me 3 guys have tried tuners and had no luck in the mountains out west. Bikes dyno in iowa. Anyone have any good use from these up in the mountains? Thanks

Is it ready for nightster special 975?

Hey guys! Whats better fp4 fp3 or power commander 5 or power vision. To not mess with ecu stock setting etc? I have a 2007 night rod with filter and 2 into 1 bassani?thank you so much!

I’ve seen where the FP4 is being used to tune for a select few cams. Can you confirm or deny?

What other options are there to V&H? FP4 looks like its more limiting and a lot more expensive than FP3 and I was looking for an FP3 but EoL. Sportster 1200 2020 model, need to know what options there are other than V&H FP4...

doe voided warraty ?

Does it remove the speed limiter/governor?

FP4 sensor data display is a huge disappointment when compared to the FP3. Fixed something that didn't need to be fixed! I would give up the "code clearing" function for the FP3 sensor display.

No stage 2 support? Sounds like a downgrade from the FP3.

Any reviews on power vision 4?

I inherited my dads 2003 Anniversary Sportster…. garage kept and immaculate… the only mods are dealer installed open exhaust and a screaming eagle . I want to put the original factory exhaust back on the bike…and keep the screaming eagle.. but I am not interested in paying 15% of the bike’s value to have the ECM/EFI system reprogrammed just because it will be running a little richer. So here’s my question ; for the bike above, is there a plug and play scanner that that provide info on the the CURRENT programming / EFI Mapping, with which I can make and informed decision on “ is a remapping even necessary”…?…. Slightly rich ?….got it if the bike doesn’t like to start when it is warm, then it ,any need to be remapped… and there may be some snootiness on the plugs, exhaust valves and exhausts system. But just opening the throttle before bed time and then inspecting the plugs when the bike is cold should be a basic pre-emptive and standard mx anyway. Does this bike even HAVE a cat converter?… if not….hmmm. 2003 HUGGER..883…. Ok haters …HATE…. My dad has owned sportsters since 1492… he and his first one came over on the Santa Yommamma when he and it were running from some fairy princess king. I don’t need “ maximum performance”… ( duh…883)… but I just don’t want to break the bike and I don’t want to spend WAY too much money on MX… if it isn’t needed Thx

Which tuner do i need for a cam upgrade? I heard fp4 doesnt support stage 2

Why having a chain in a fatbob? 4:52

Can you use it one more then one bike? Like her bike and my bike???

Anyone in Europe running this on a euro5 Milwaukee 8 bike? Fxlrs. Also does it have maps for bassani pipes?

Stage 1 only? Why make a new version with less options? For the price, might was well go with the thunder max

Never do business with Vance & Hines! I ordered and cancelled an FP4, they shipped it anyway. I called and got a return authorization for the new unopened unit. They never sent the fedex label they promised, so I sent it UPS, insured and tracked. They got it and never paid me in spite of multiple phone calls and promises for a full refund. It's been about a month, no refund, no return contact, no service...

Im the one that was under the rock all these years... Oh wait....that's for HD....I will stay under the rock.

Am I able to remove it and tune another bike?

So no bluetooth, no stage 2. Seems like a huge downgrade from the FP3 with a much larger price tag.. what's the deal with that?

Had to click on possibly the dullest 'anti-clickbait' thumbnail ever!

The FP4 is EPA compliant, that's a big downgrade from the FP3

It’s straight garbage. Once I updated the firmware on it, it quit working. I talked to a rep at VH who said they would send me a shipping box and label so I could do I could send them the fuel pack. That was almost a month ago, and still no shipping items have arrive. I have purchased their short shots , fp4 and vo2 intake. Since their customer service sucks, I’m considering stripping all of those before mentioned items off of my bike and going with someone else. Going forward, i will never purchase anything Vance and Hines again!

Not happy! The tuner is not good enough yet. My FP3 is perfect, the FP4 is trash. I copied the FACTORY TUNE so that I could modify that myself (experienced tuner of cars here). Without any changes to the tune, one should expect it to run EXACTLY THE SAME AS FACTORY. It does NOT. V&H change stuff in the background even with the factory tune. The tables they have changed effect things like knock retard and other timing related items. Now, with an untouched FACTORY FILE my bike detonates on rapid throttle (burst knock), pings in other places, idles erratically and just is wrong. After then trying to tune those issues out, and removing so much timing its silly, I am giving up and reloading the original stock tune and walking away from the FP4.

No offense to you but the fp4 doesn't do a thing for decel pop. They talk about 1 firecracker, 2 firecrackers or 3 firecrackers. They are full of shit . It doesn't do anything and as far as the way the bike runs...I don't notice anything at all . I wish that I could return this piece of shit but they won't take it. Save your money. Try another product.