Home
What's new
Latest activity
Authors
Store
Latest reviews
Search products
Forums
New posts
Search forums
What's new
New posts
New listings
New products
New profile posts
Latest activity
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
Cart
Cart
Loading…
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Search titles only
By:
Menu
Log in
Register
Navigation
Install the app
Install
More options
Change style
Contact us
Close Menu
Forums
Mustang Forums
2011-2014 Mustangs
2011-2014 Mustang Talk
11-14 aluminator, turbo car.
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="clinton2003" data-source="post: 15974498" data-attributes="member: 144769"><p>Since you have vbands, you might try taking off the exhaust just before your flex joint. Most coyote's have a much bigger exhaust coming out of turbo, most of the time either dumping up front, or going into a dual exhaust. Could be a restriction there, which could build up too much back pressure, especially if you have a chambered (stock style) muffler.</p><p></p><p>The boss valve springs are usually ok, but with higher boost, can be an issue, especially if a lot of miles has gone into them, ive seen them wear out pretty quick.</p><p></p><p>that weird slump in graph is odd, you should get a better picture of graph with engine rpm, not speed. and get rid of the other ones. that way you can see more of the graph. you could probably have the dyno shop send you the files, and you can play around with them at home.</p><p></p><p>that 76 should be big enough to hit the limits of your motor for sure. </p><p></p><p>be curious to see how much timing its getting at WOT, and what commanded/measured lambda is. they could be really conservative with the tune.</p><p></p><p>what kind of intercooler do you have? just out of curiosity.</p><p></p><p></p><p></p><p>At the end, does it feel faster? Did you ever take it to the track? Being that you didnt dyno it before not much to compare to now. previous shop could have been claiming 600 flywheel, which would be more like 510ish whp.... Which would be close to correct (at a standard 15% power loss through trans/rear end)</p><p></p><p>If you took it to the track, and know the race weight, you can find out a close approximation <a href="https://www.svtperformance.com/forums/threads/whp-estimation-from-track-times.1159934/#post-15915250" target="_blank">HERE</a>.</p><p></p><p>Then you can take it back, with similar setup and run again to see your mph to get a fair comparision.</p></blockquote><p></p>
[QUOTE="clinton2003, post: 15974498, member: 144769"] Since you have vbands, you might try taking off the exhaust just before your flex joint. Most coyote's have a much bigger exhaust coming out of turbo, most of the time either dumping up front, or going into a dual exhaust. Could be a restriction there, which could build up too much back pressure, especially if you have a chambered (stock style) muffler. The boss valve springs are usually ok, but with higher boost, can be an issue, especially if a lot of miles has gone into them, ive seen them wear out pretty quick. that weird slump in graph is odd, you should get a better picture of graph with engine rpm, not speed. and get rid of the other ones. that way you can see more of the graph. you could probably have the dyno shop send you the files, and you can play around with them at home. that 76 should be big enough to hit the limits of your motor for sure. be curious to see how much timing its getting at WOT, and what commanded/measured lambda is. they could be really conservative with the tune. what kind of intercooler do you have? just out of curiosity. At the end, does it feel faster? Did you ever take it to the track? Being that you didnt dyno it before not much to compare to now. previous shop could have been claiming 600 flywheel, which would be more like 510ish whp.... Which would be close to correct (at a standard 15% power loss through trans/rear end) If you took it to the track, and know the race weight, you can find out a close approximation [URL='https://www.svtperformance.com/forums/threads/whp-estimation-from-track-times.1159934/#post-15915250']HERE[/URL]. Then you can take it back, with similar setup and run again to see your mph to get a fair comparision. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Mustang Forums
2011-2014 Mustangs
2011-2014 Mustang Talk
11-14 aluminator, turbo car.
Top