Notices
1999 - 2016 Super Duty 1999 to 2016 Ford F250, F350, F450 and F550 Super Duty with diesel V8 and gas V8 and V10 engines
Sponsored by:
Sponsored by: Real Truck

Weird boost numbers

Thread Tools
 
Search this Thread
 
Old Jul 16, 2016 | 07:52 PM
  #1  
Mater08's Avatar
Mater08
Thread Starter
|
New User
Joined: Jul 2016
Posts: 3
Likes: 0
Weird boost numbers

So running into an issue with boost numbers. Factory gauge reads between 20-30lbs on throttle, but I have a SCT x4 and it only reads 3lbs and at idle it only reads .25-.89 somewhere around that range.
Are these numbers accurate?
Also, it has developed a sort of buck or chug at like quarter throttle while accelerating, it's sluggish leaving stop signs etc. and it sounds like the waste gate or blow off it holding on even after I let off of the throttle.

Any ideas?
 
Reply
Old Jul 16, 2016 | 09:10 PM
  #2  
Unclemark's Avatar
Unclemark
Senior User
Joined: Jul 2015
Posts: 237
Likes: 0
I don't think variable geometry turbos have pop off valves or waste gates.... Maybe ficm issue? I'm not very well versed on the 6.4's though.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Jay David
2009 - 2014 F150
1
Feb 17, 2018 10:46 PM
doug42190
6.0L Power Stroke Diesel
15
Jul 20, 2016 03:15 PM
ssmokey24
1999 - 2003 7.3L Power Stroke Diesel
3
Jul 15, 2015 07:42 AM
true blue
1999 - 2003 7.3L Power Stroke Diesel
17
Jan 1, 2011 02:23 PM
kupaa
1999 - 2003 7.3L Power Stroke Diesel
3
Mar 15, 2009 01:18 PM




All times are GMT -5. The time now is 05:04 AM.

story-0
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

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


VIEW MORE
story-1
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-2
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-3
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-4
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-5
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-6
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-7
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
story-8
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-9
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE