EVO All Evo Model Discussion

Thunder Max EFI upgrade?

Thread Tools
 
Search this Thread
 
Old Jan 10, 2008 | 08:26 PM
  #1  
BruceHarrisJr's Avatar
BruceHarrisJr
Thread Starter
|
Cruiser
Joined: Feb 2006
Posts: 106
Likes: 1
From: Burlington, North Carolina USA
Default Thunder Max EFI upgrade?

I was just now reading the information on ThunderMax's website about their replacement EFI system. It replaces the stock Marelli EFI on my bike and other year models as well. Has anyone done this replacement? What were your reasons for doing so and what have been your results? I would consider doing it after my engine's warranty expires at the end of November. Thus far I have no complaints with the Marelli EFI except I'm very disappointed in my current fuel mileage; 33-35 mpg at a true 65mph.
Over the next several months I plan to investigate the results of having the ThunderMax EFI w/closed loop auto tuner installed and possibly adding Screamin Eagle heads. My desire would be for better fuel economy and a bit more power with no increase in exhaust sound; I run stock exhaust; easier on my ears whilst riding long distances. Lemme know what 'cha think, okay?
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
VHinch
Dyna Glide Models
6
May 26, 2016 09:16 PM
thanson_mopar
Dyna Glide Models
2
Mar 5, 2013 11:59 PM
DavidStiebel
Sportster Models
63
Jan 8, 2012 08:15 AM
HDF Tech
Ignition/Tuner/ECM/Fuel Injection
0
Feb 26, 2006 03:53 PM
Brucest
Touring Models
3
Jan 3, 2006 01:18 AM




All times are GMT -5. The time now is 09:30 AM.

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