Full exhaust with open downpipe from header?!! Help please
#1
Newbie
Thread Starter
Join Date: Sep 2013
Location: GA
Posts: 16
Likes: 0
Received 0 Likes
on
0 Posts
Full exhaust with open downpipe from header?!! Help please
This is my first post, I don't know how to surf a forum because it is my first as well, I am not looking for sarcasm or anything, just help. I am mechanically inclined but i am not so familiar with this car yet, i bought it sat. i got under the vehicle and found this .....IS this a open down pipe off the exhaust manifold? but i still have the full exhaust. How is this affecting back-pressure, as my service engine light came on this morning. The down-pipe come off the passenger side of the exhaust manifold down beside the exhaust down-pipe and then open. How is this hurting the car? Thanks
Last edited by Iowa999; Oct 4, 2013 at 01:43 PM.
#3
EvoM Guru
iTrader: (26)
That looks like an open dump from the wastegate. It is only used when your engine reaches desired boost pressure. Then the wastegate opens and dumps the excess exhaust gas so the turbo won't spool any faster. Also, you're in the wrong section. You want to be asking questions in the Evo X General section.
#5
Newbie
Thread Starter
Join Date: Sep 2013
Location: GA
Posts: 16
Likes: 0
Received 0 Likes
on
0 Posts
Turns out the light came on for p1320, which seems to be common for this car? I dont think its the thermostat so im going to have to go with the car needing to be tuned, maybe they flashed it before i bought it and the light was out then after awhile it came it back on? grimy if so
Trending Topics
#8
Evolved Member
iTrader: (1)
Think of it as extra overflow air. Your car doesn't want to run too much boost so it bleeds extra out of that hole. Usually it routes back into the exhaust but with a dump it goes out to the atmosphere. It's also much louder under boost.
#9
Newbie
iTrader: (2)
Join Date: Apr 2013
Location: Tucson
Posts: 19
Likes: 0
Received 0 Likes
on
0 Posts
When max boost is reached the diaphram sees the pressure and actuates a rod which opens a flapper which lets some air go out the other pipe.
Think of it as extra overflow air. Your car doesn't want to run too much boost so it bleeds extra out of that hole. Usually it routes back into the exhaust but with a dump it goes out to the atmosphere. It's also much louder under boost.
Think of it as extra overflow air. Your car doesn't want to run too much boost so it bleeds extra out of that hole. Usually it routes back into the exhaust but with a dump it goes out to the atmosphere. It's also much louder under boost.
Thank you Sir!
Thread
Thread Starter
Forum
Replies
Last Post
MisUnderStood
Evo Engine / Turbo / Drivetrain
7
Mar 15, 2013 12:38 PM
shunderwunder
Evo Engine / Turbo / Drivetrain
29
Mar 8, 2008 02:55 PM