My 2011 Mustang GT 5.0 dyno results
11-13-2010, 02:15 AM
#26
6th Gear Member
Darkstarnes, I probably should have stated they don't add measurable power; at least not on the 4.6L. The vast majority of the feedback has been no seat-of-the-pants change, only a note change. For those that DID feel a SOTP increase, one has to wonder if it was the mind tricked by the ears. And trying to capture about 5 RWHP change on a dyno is tough. Even identical back-to-back pulls can yield a variance that would make a mod with single digit gains almost impossible to distinguish.
It's possible that an X on the 5.0 yields better results but based on the X vs H design, it just makes me wonder.
It's possible that an X on the 5.0 yields better results but based on the X vs H design, it just makes me wonder.
11-13-2010, 08:34 AM
#28
I have yet to take mine and put in on a dyno, I hope I can find a Dynojet in my area, but my butt dyno tells me that the car has a serious load of power. I constantly have to look down at the speed-o because if I don't, I will very quickly reach 80MPH in a 45 speed zone. The car runs so smoothly and cleanly, you literally are not aware what speed you are going unless you pay attention.
11-13-2010, 01:42 PM
#29
5th Gear Member
Join Date: Dec 2004
Location: Small walk way by big walk way
Posts: 4,717
11-13-2010, 01:45 PM
#30
5th Gear Member
Join Date: Dec 2004
Location: Small walk way by big walk way
Posts: 4,717
I have been told that the S-197 05-09 like back pressure. I never have understood the term o/R x but I can tell you I have heard people who have bought the mac prochamber without cats actually depleted their power as opposed to someone who kept the cats which I did and noticed more more than before with the H-pipe. *** Dyno can't prove the numbers but I'm happy with the change.