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
2015+ S550 Mustangs
2015+ S550 Mustang Talk
Hellion turbo 2015 gt.......949 rwhp!
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="Mach828" data-source="post: 14539401" data-attributes="member: 102965"><p>Exactly my point. The correction factor takes into account the atmosphere difference, which makes up a huge part of the correction factor. With NA engines the correction factors are pretty much spot on assuming the dyno is receiving the proper inputs. </p><p></p><p>With a turbo the wastegate maintains a set manifold absolute pressure. Sure there will be some variations as far as turbo efficiency, the powerband will change slightly, but the MAP is constant over various altitudes given the turbo has the room to make up the difference. Doesn't matter if the elevation is 0ft or 10,000ft. If you see a difference in max boost due to elevation in a turbo car, its most likely due to a variance in turbo efficiency. </p><p></p><p>If you correct the dyno number at high elevation for a turbo car you are saying it is a giant NA engine and when it goes to sea level there will be a change in MAP, which there won't. The portion of power made by the engine itself will increase at sea level, where as the portion produced by the turbos will decrease. Again there are more variables but we are just making estimates. </p><p></p><p>If you look up the SAE standards they specifically state that applying the correction factor to turbo cars at high elevations is wrong.</p></blockquote><p></p>
[QUOTE="Mach828, post: 14539401, member: 102965"] Exactly my point. The correction factor takes into account the atmosphere difference, which makes up a huge part of the correction factor. With NA engines the correction factors are pretty much spot on assuming the dyno is receiving the proper inputs. With a turbo the wastegate maintains a set manifold absolute pressure. Sure there will be some variations as far as turbo efficiency, the powerband will change slightly, but the MAP is constant over various altitudes given the turbo has the room to make up the difference. Doesn't matter if the elevation is 0ft or 10,000ft. If you see a difference in max boost due to elevation in a turbo car, its most likely due to a variance in turbo efficiency. If you correct the dyno number at high elevation for a turbo car you are saying it is a giant NA engine and when it goes to sea level there will be a change in MAP, which there won't. The portion of power made by the engine itself will increase at sea level, where as the portion produced by the turbos will decrease. Again there are more variables but we are just making estimates. If you look up the SAE standards they specifically state that applying the correction factor to turbo cars at high elevations is wrong. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Mustang Forums
2015+ S550 Mustangs
2015+ S550 Mustang Talk
Hellion turbo 2015 gt.......949 rwhp!
Top