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Thread: 2012...Magnaflow good choice? Reply to Thread
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Topic Review (Newest First)
01-31-2013 02:31 PM
TheDriver916 Thank you! Any input is welcome.
01-31-2013 02:25 PM
danno428cj
Quote:
Originally Posted by TheDriver916 View Post
On I know a few people were interested in how my magnaflow setup sounded. And surprisingly it was really easy to do.

https://www.youtube.com/watch?v=uSj1...e_gdata_player
Sounds great!
01-31-2013 01:32 PM
TheDriver916 On I know a few people were interested in how my magnaflow setup sounded. And surprisingly it was really easy to do.

https://www.youtube.com/watch?v=uSj1...e_gdata_player
01-31-2013 09:29 AM
danno428cj
Quote:
Originally Posted by cobrajet429 View Post
You want too still cram as much air as possible with a scavenging affect. Air is still a factor in power making.
Right, and having less exhaust backpressure, by removing restrictions in the exhaust system will increase this effect to a point.

People are getting all bent outa shape about loosing back pressure in these Focus motors, it's not as much of a foctor as say a Honda. Opening up the exhaust systems on these new Focus engines is really going to wake them up.
01-30-2013 08:36 PM
cobrajet429
Quote:
Originally Posted by danno428cj View Post
Back pressue is not a factor in direct injection engines, as fuel charge scavenging can not happen, becasue the fuel charge is delivered at full compresion.
You want too still cram as much air as possible with a scavenging affect. Air is still a factor in power making.
01-28-2013 04:16 PM
Joey D
Quote:
Originally Posted by TheDriver916 View Post
Has anyone seen more than 2-3 mpg increase with the exhaust?? Not that it should but who knows its possible to get 4-5 with an intake and exhaust system right?
With the Magnaflow and the Steeda CAI I haven't noticed a change in my mpg at all. It's still roughly 34mpg in the city with winter tires and 32mpg with summer.
01-28-2013 02:42 PM
TheDriver916 Has anyone seen more than 2-3 mpg increase with the exhaust?? Not that it should but who knows its possible to get 4-5 with an intake and exhaust system right?
01-28-2013 11:39 AM
danno428cj
Quote:
Originally Posted by cobrajet429 View Post
No but you still need to clear the combustion chamber of burned gases.
Yes, that's why we have such things as cam overlap. Back pressure would prevent some gasses from leaving the chamber.n

Remember these motors run 12:1, they are probably pretty good at clearing the cylinder anyway.
01-26-2013 08:58 PM
cobrajet429
Quote:
Originally Posted by danno428cj View Post
Back pressue is not a factor in direct injection engines, as fuel charge scavenging can not happen, becasue the fuel charge is delivered at full compresion.
No but you still need to clear the combustion chamber of burned gases.
01-24-2013 05:53 AM
rbpexman Are you asking if it's a CAI? No...it's a drop in...in the air box.
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