Notices
6.4L Power Stroke Diesel Engine fitted to 2008 - 2010 F250, F350 and F450 pickup trucks and F350 + Cab Chassis

CSB 11B23 ?????'s

Thread Tools
 
Search this Thread
 
Old Apr 15, 2011 | 03:12 PM
  #1  
cglenn's Avatar
cglenn
Thread Starter
|
New User
Joined: Jul 2003
Posts: 8
Likes: 0
Question CSB 11B23 ?????'s

Just had Ford's CSB 11B23 flash performed at my local dealer. First impressions are not much of a difference other than the LOM shows anywhere between 19.4 and 20.2 MPG. I know Ford tightned some tolerances for potential fault detection but WHAT did they do to make an apparent/alledged mpg increase ?

Curious, and I highly doubt it but has anyone heard of someone doing a baseline dyno before update and after update ? For mpg variances I know timing and/or fuel maps must have been altered. Wonder what it did to HP/TRQ ? I wonder if they were negatively impacted to provide "more protection" to our engines....



Has anyone actually looked at the fuel curves, timing charts etc for the new flash so as to be able to make an educated/experience based guess as to what affect this flash has on performance(HP/TRQ) ??

 
Reply
Old Apr 15, 2011 | 09:14 PM
  #2  
parkland's Avatar
parkland
Lead Driver
Joined: Jan 2006
Posts: 6,267
Likes: 5
this is very interesting...

i wonder how many people would catch on if they just padded the LOM more....
 
Reply
Old Apr 16, 2011 | 10:03 AM
  #3  
Ronin 5729's Avatar
Ronin 5729
Senior User
Joined: Mar 2006
Posts: 437
Likes: 0
Lie-O-Meter be damned, if you wanna keep it real and get the straight scoop on your mileage, you gotta hand calculate it. Fuelly is an awesome tool to track your MPG and know what works and doesn't. I didn't read anywhere in the notice where it stated increased MPGs, (?) but wouldn't be surprised if some dealers were saying that to drag people in to get it done, which is something Ford corporate probably wouldn't be too happy about...
 
Reply
Old Apr 16, 2011 | 03:51 PM
  #4  
percyad's Avatar
percyad
Junior User
Joined: Apr 2007
Posts: 64
Likes: 0
Had mine done this last week - saw no change in any operation or display information. Still runs like a champ!
 
Reply
Old Apr 16, 2011 | 06:45 PM
  #5  
StanleyZ's Avatar
StanleyZ
Logistics Pro
20 Year Member
Joined: Nov 2001
Posts: 3,787
Likes: 102
From: Georgia
Originally Posted by cglenn
Just had Ford's CSB 11B23 flash performed at my local dealer. First impressions are not much of a difference other than the LOM shows anywhere between 19.4 and 20.2 MPG. I know Ford tightned some tolerances for potential fault detection but WHAT did they do to make an apparent/alledged mpg increase ?

Curious, and I highly doubt it but has anyone heard of someone doing a baseline dyno before update and after update ? For mpg variances I know timing and/or fuel maps must have been altered. Wonder what it did to HP/TRQ ? I wonder if they were negatively impacted to provide "more protection" to our engines....



Has anyone actually looked at the fuel curves, timing charts etc for the new flash so as to be able to make an educated/experience based guess as to what affect this flash has on performance(HP/TRQ) ??

I don't think there is any reason to expect any change in MPG, none was suggested or promised in the letter. Purpose of the flash was to change the parameters under which your truck will shut down and go limp to protect the engine from harm. Nothing else should change. However, a number of folks have stated that their "cleaning exhaust filter" message stays on only briefly. That change was in a flash that was done last year but I guess some either didn't get it or bought new trucks that didn't get it before being shipped.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
good to doo
1973 - 1979 F-100 & Larger F-Series Trucks
0
Jun 16, 2017 09:46 AM
Kyle Wood
1973 - 1979 F-100 & Larger F-Series Trucks
2
Dec 3, 2016 05:17 PM
460jared96
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
5
Nov 8, 2016 09:20 PM
moroza
1973 - 1979 F-100 & Larger F-Series Trucks
16
May 20, 2016 04:14 PM
csb41502
1978 - 1996 Big Bronco
5
Sep 22, 2007 11:09 AM




All times are GMT -5. The time now is 11:53 AM.

story-0
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-1
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-2
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-3
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-4
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-5
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-6
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-7
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-8
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-9
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE