High EGT's, Low Boost?? - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 09-10-2012, 04:38 PM
Member
 

Join Date: Nov 2010
Location: Virginia Beach, Va
Posts: 59
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via AIM to DieselJoE26
High EGT's, Low Boost??

Hey there peps, would like you input on this issue please.

My buddy has an 03 F350 dually 7.3L, 4" exhaust, K&N air cleaner assy, GTP38R turbo.
His issue is that on slight tip in, egt's rise and boost is low. His fuel pressure is good, no exhaust leaks, no CAC leaks, MAP, BARO, EBP are with in 0.5psi of each other all are under 14.7psi also. Waste gate linkage is ok(not binding or mis-adjusted), EPC valve(on pedestal) is ok, not mis-adjusted or binding, at WOT it is only boosting to 16-17psi with the bigger ball bearing turbo. He has stated that stock it has boosted up to 22-23psi. Injectors are operating properly. I have been helping him out on this. I do not know what else to look for.

Your inputs and opinions would be helpful.. Thanks
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 09-10-2012, 10:58 PM
Serving Our Country!
 

Join Date: Aug 2007
Location: Manor, TX
Posts: 2,663
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 2 reviews
That's about what I saw after installing a 38r. The wastegate is set too loose, tighten it up and you should be able to get close to the same boost as the stock turbo. Keep in mind that you won't see as much boost because it's lager and less restrictive but is still moving more air. If your running stock injectors, just tighten the wastegate as far as it can go, you won't be able to max out the turbo.
Reply With Quote Quick reply to this message
  #3  
Old 09-11-2012, 05:32 AM
Compression Ignition Addict
 

Join Date: Nov 2009
Posts: 185
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
You may be creating a too lean condition (too much air and not enough fuel) if he is running stock injectors.
Reply With Quote Quick reply to this message
  #4  
Old 09-11-2012, 05:42 AM
Banned
 

Join Date: Sep 2008
Location: Fort Bragg, NC/Buff, NY/Midlothian, VA
Posts: 5,630
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by DieselJoE26 View Post
Hey there peps, would like you input on this issue please.

My buddy has an 03 F350 dually 7.3L, 4" exhaust, K&N air cleaner assy, GTP38R turbo.
His issue is that on slight tip in, egt's rise and boost is low. His fuel pressure is good, no exhaust leaks, no CAC leaks, MAP, BARO, EBP are with in 0.5psi of each other all are under 14.7psi also. Waste gate linkage is ok(not binding or mis-adjusted), EPC valve(on pedestal) is ok, not mis-adjusted or binding, at WOT it is only boosting to 16-17psi with the bigger ball bearing turbo. He has stated that stock it has boosted up to 22-23psi. Injectors are operating properly. I have been helping him out on this. I do not know what else to look for.

Your inputs and opinions would be helpful.. Thanks
First thing I'd do is remove that restrictive, underflowing, motor and turbo dusting k&n crap.

Second, if you have stock injectors, they aren't tossing nearly enough fuel at that 38r to spool it up.


Oh, apparently jrz13 has replied with the same thing.. Didnt see that. But thats what I'm leaning towards.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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:

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
Display Modes

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



All times are GMT -8. The time now is 11:23 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors