Forums
New posts
Search forums
What's new
New posts
New media
New media comments
New profile posts
Latest activity
New showcase items
New showcase comments
Media
New media
New comments
Search media
Members
Current visitors
New profile posts
Search profile posts
Showcase
New items
New comments
Latest content
Latest reviews
Latest updates
Search showcase
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Power Strokes
7.3 Aftermarket
Another T4 thread
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
[QUOTE="mikeeg02, post: 1472713, member: 24194"] I posted videos earlier, and I can repost them again if you'd like. But with my setup, (and loaded heavy) I can make a smoke free ~15psi at 1,500 rpms. ( not that I'm advising anyone to do that) but this turbo spools up really fast on my truck. I completely agree about your theory on gating off the back pressure, and I see the same thing, the turbo basically parks at ~42 psi, and as soon as it hits ~40 psi the back pressure goes up, and on my setup its to ~65psi. Which is 1:1.6, (which isnt awful) and only seen (for me) in short bursts. If I was competing with it, it would definitely be gated, because like you, I think its from a restriction on the turbine side. But since its such a rare occasion for me to be in that situation, it doesnt bother me. Also, I have seen both boost and back pressure climb faster than one another. For me, it seems to depend on the situation, but they are generally only a needles width apart from one another up util 40psi. [/QUOTE]
Insert quotes…
Verification
Post reply
Random media
Latest posts
Won’t start
Latest: psduser1
Yesterday at 11:33 AM
7.3 Tech & FAQ
GT37 Turbocharger w/10 blade turbine, billet comp.
Latest: hskfab
Friday at 1:24 PM
Engine and Drivetrain
Hard steer question/issue
Latest: psduser1
Jun 5, 2025
7.3 Tech
B
WTS/WIF light flash and stall issue
Latest: blickcd
Jun 5, 2025
6.0 Tech
T
2013+ steering gearbox in older trucks
Latest: TPOLO
Jun 4, 2025
Suspension, Drive Train, and Tires
Members online
No members online now.
Forums
Power Strokes
7.3 Aftermarket
Another T4 thread
Top