Forums
New posts
Search forums
What's new
New posts
New profile posts
Latest activity
Members
Registered members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
RAM TRX - TRX-Forum.com
Bronco Raptor - BroncoRaptorForum.com
Forums
GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Hp/Tq numbers with mods
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
<blockquote data-quote="combatninja" data-source="post: 1094887" data-attributes="member: 22285"><p>To really oversimplify things, with a turbocharged engine, less backpressure is what you are always looking for. You don't have the complicated fluid dynamics of a naturally aspirated powerplant in which you need a certain amount of backpressure to ensure proper scavenging of exhaust gases and so forth. You can just open everything up without worrying about losing torque here or power there. </p><p>That said, whether or not the Raptor dual system will be adequate depends mostly on the diameter of the tubing used. I'm guessing they went with something around 2.5" which would be fine on anything the stock turbos will be capable of producing. As soon as you are boosting 23+psi, you are going to need more flow than that. I expect most aftermarket systems for this truck to use dual 3" piping. </p><p>One final caveat, muffler design also plays a role. Often, if a system is very carefully tuned to produce a certain sound at a given boost level, things often get real weird when you start exceeding that level. You can get some funky noises at WOT from some factory systems when you are throwing more air at </p><p>it. When I was messing with the B5 Audi S4, the stock exhaust made some crazy noises at certain revs at WOT once I put a tune on an otherwise stock car. This sound was commonly referred to the "sandblaster effect" since that is essentially what it sounded like. </p><p>If anyone knows the inside diameter of the stock piping, post it up. Then we can start making some educated estimates of the power potential of the stock system. It would be great if Ford went with dual 2.75" or thereabouts but I expect not.</p></blockquote><p></p>
[QUOTE="combatninja, post: 1094887, member: 22285"] To really oversimplify things, with a turbocharged engine, less backpressure is what you are always looking for. You don't have the complicated fluid dynamics of a naturally aspirated powerplant in which you need a certain amount of backpressure to ensure proper scavenging of exhaust gases and so forth. You can just open everything up without worrying about losing torque here or power there. That said, whether or not the Raptor dual system will be adequate depends mostly on the diameter of the tubing used. I'm guessing they went with something around 2.5" which would be fine on anything the stock turbos will be capable of producing. As soon as you are boosting 23+psi, you are going to need more flow than that. I expect most aftermarket systems for this truck to use dual 3" piping. One final caveat, muffler design also plays a role. Often, if a system is very carefully tuned to produce a certain sound at a given boost level, things often get real weird when you start exceeding that level. You can get some funky noises at WOT from some factory systems when you are throwing more air at it. When I was messing with the B5 Audi S4, the stock exhaust made some crazy noises at certain revs at WOT once I put a tune on an otherwise stock car. This sound was commonly referred to the "sandblaster effect" since that is essentially what it sounded like. If anyone knows the inside diameter of the stock piping, post it up. Then we can start making some educated estimates of the power potential of the stock system. It would be great if Ford went with dual 2.75" or thereabouts but I expect not. [/QUOTE]
Insert quotes…
Verification
Post reply
Staff online
Griffin
Administrator
Members online
Wartman
Littlefx4
CSP
Rnr
2slo4u
WNCHSTR96
Latchkey Kid
Rustfish
xgardx
t4arghhh
Hard R
jAKe47
Colorapdo
Rednose
bcc
dinero_wey
cardiacdoc
Stingray23
MORaptor1
RRick
eljefe_tx
Griffin
nixon
pat247
shigman
weldoid
eorodriguez30
downforce137
harvell326
Grayson
Syberspace
albertgon1
DMacDonald
06z
Johnny@Apollo-Optics
Sean76710
alockbox
NickyF25
Sharpie69
jekyll537
JohnyPython
Derrick Hernandez
riv
Haydel53
kandewinn
Solboricua18
navy2x
nemx735
Gdog
cb35
... and 23 more.
Forum statistics
Threads
93,197
Posts
1,955,777
Members
56,485
Latest member
bjorn-dpc
Forums
GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Hp/Tq numbers with mods
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top