Notices
General Engine Management / Tuning Forum Discuss general EMS tuning concepts that do not pertain to a specfic brand or product.

02 hood dump daily question

Thread Tools
 
Search this Thread
 
Old Dec 13, 2016, 11:13 AM
  #1  
Newbie
Thread Starter
iTrader: (2)
 
Nadaevo's Avatar
 
Join Date: Sep 2015
Location: Minnesota
Posts: 33
Likes: 0
Received 0 Likes on 0 Posts
02 hood dump daily question

so im running a JM fab hood dump 02 housing daily driving it and notice smoke coming from it while giving any gas at all. I thought it wasn't suppose to open unless under boost? is there a leak or is this normal? anyone else dailying a hood dump? thanks
Old Dec 28, 2016, 07:30 AM
  #2  
Evolving Member
iTrader: (1)
 
cerevo's Avatar
 
Join Date: Jul 2011
Location: Kentucky
Posts: 497
Received 11 Likes on 11 Posts
Is there any preload (spring pressure) on the flapper to hold it closed tightly?

Could be a gasket not sealing too. I assume this is on a stock style turbo?

There are some gaskets that do not have the block off rail (for lack of better term) to divide the engine exhaust from the O2 exhaust. If that makes sense.

Without the divider exhaust would be able to flow pretty freely out that dump tube.

Pics are worth 1000 words so here is what I am talking about.




O2 exhaust divided from the main exhaust



o2 exhaust is NOT divided.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
MrEvo420
For Sale/WTB - Engine / Drivetrain / Power
1
Aug 29, 2015 03:46 PM
pheonix991
EvoM New Member / FAQs / EvoM Rules
14
Apr 21, 2010 12:39 AM
AllThrottle
Evo X General
20
Jul 28, 2008 12:02 PM



Quick Reply: 02 hood dump daily question



All times are GMT -7. The time now is 10:10 AM.