Question about boost at part vs full throttle - Ford Powerstroke Diesel Forum
 
LinkBack Thread Tools Display Modes
post #1 of 2 Old 07-01-2011, 08:26 AM Thread Starter
Compression Ignition Addict
 
Join Date: Nov 2010
Location: Santa Barbara, CA
Posts: 273
Thanks: 1
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Question about boost at part vs full throttle

So I am running Eric's Extreme Street tune, in top gear with the converter locked, if i am going up a slight grade and I roll into it to about half throttle, the converter stays locked and the truck pulls hard the built in boost gauge showing close to 30psi. however if I stomp it and make the truck down shift in the same spot, and hold it wide open, it only makes ~20psi. is this normal? and why?


2006 F250 FX4 Crew Cab - ARP Studs, EGR Delete, Edge Insight w/pyro, SCT X3 with SRL+
2005 Mustang GT - slightly modded
1986 F250 IDI 4x4 ZF5 - Sold
1979 Bronco 460
1967 M35A2 Deuce w/winch FOR SALE!!!
emperorjordan is offline  
post #2 of 2 Old 07-01-2011, 03:50 PM
Super Moderator


 
PGreenSVT's Avatar
 
Join Date: Mar 2008
Location: Abingdon, Md.
Posts: 11,991
Thanks: 4
Thanked 48 Times in 19 Posts
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 3 reviews
Yes it is normal. I assume it a safety factor at WOT. Also lugging in 6th gear is working the engine harder than a lower gear at higher RPM.
PGreenSVT is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome