Ignition/Tuner/ECM/Fuel Injection Need advice on ignition issues? Questions about a tuner? Have questions about a EFI calibration or Fuel Injection? Tips on Engine Diagnostics, how to get codes, and what they mean. Find your answers here.

FP4 question

Thread Tools
 
Search this Thread
 
Old Nov 30, 2023 | 09:27 PM
  #1  
Pauly680's Avatar
Pauly680
Thread Starter
|
Stage II
Joined: Nov 2023
Posts: 2
Likes: 0
From: Memphis
Default FP4 question

Hey all ,

I was considering getting an fp4. Does anyone have one that can share their experience?

id like to know if you could tune it for a specific cam like the Fp3 could?

id also like to know how the auto tune feature was like to use

thanks
 
Reply
Old Dec 2, 2023 | 05:13 PM
  #2  
60Gunner's Avatar
60Gunner
Grand HDF Member
Joined: Sep 2017
Posts: 4,359
Likes: 1,219
From: Dubuque, IA
Default

First off, there is no such thing as autotune. Second of all, the FP3 leaves a lot to be desired as anything but a stage 1 half assed fuel management system and marginal at that. The FP4 is for 21 and newer bikes.

You need to watch these videos in their entirety. I don't have the patience to explain it all for the hundredh time anymore. Very few people here have the knowledge or technology to gather data and tune an ECM with all it's tables under varying loads.
Find a competent tuner that has and knows ow to use a dyno to properly tune your engine not only for max power but fuel economy and overall engine health and longevity. You don't know how, That box you hook up sure doesn't. So how are you getting a tune specifically for all your bike's variables? By email? Haha! Surely you jest!

​​​​​Pay attention. Then go get a TTS Mastertune and find a competent tuner with a dyno. Not just anyone with a dyno either. Stay away from dealer dynos. Most don't know how to tune and/or aren't allowed to properly tune if they did.
Most good tuners prefer the TTS. Very few, if any, will tune with the FP3 or FP4. It's an inferior tuner.


Here's another.





 

Last edited by 60Gunner; Dec 2, 2023 at 05:19 PM.
Reply
Old Dec 2, 2023 | 05:26 PM
  #3  
Pauly680's Avatar
Pauly680
Thread Starter
|
Stage II
Joined: Nov 2023
Posts: 2
Likes: 0
From: Memphis
Default

Will do thanks.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
morooster
Milwaukee Eight (M8)
25
Jun 1, 2023 12:58 PM
Scott3114
Touring Models
5
Dec 18, 2022 07:15 AM
Junker
The Dyno Room
4
Dec 1, 2022 02:20 PM
FrenchieM
Audio Systems
13
Jan 2, 2020 08:46 AM
lump175
Sportster Models
1
Jul 11, 2013 06:20 AM




All times are GMT -5. The time now is 03:29 PM.

story-0
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-1
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-2
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-3
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-4
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-5
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-6
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-7
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-8
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-9
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE