DV relocation???
#11
03-13-2008 | 02:21 PM
4th Gear
Joined: Aug 2006
Posts: 5,769
From: Phoenix Arizona
RE: DV relocation???
ORIGINAL: cincyTT
I guess someone missed dv/bov class. The closer to the TB the better the valve functions. It reduces respool time, decrease the chance of surge, and the cooler air has less effect on a diaphram valve (ie 710n).
ORIGINAL: pimphell
yeh, I wouldn't even try to move it. It would be senseless.
yeh, I wouldn't even try to move it. It would be senseless.
Josh
#12
03-13-2008 | 10:14 PM
Senior Member
Joined: Jan 2008
Posts: 361
From: Colorado Springs, CO
RE: DV relocation???
But. why move DV if a BOV would be a better addition??? I would rather have a open apmosphere BOV by the intake instead of a DV. Kinda pointless? Unless you wanted to recirrculate for some reason?
#13
03-13-2008 | 10:18 PM
Senior Member
Joined: Jan 2008
Posts: 361
From: Colorado Springs, CO
RE: DV relocation???
and reduces spool time......not so much on this car as on others. the stock dv just blows air back in the intake tube at a down-ward angle instead of into the turbo? I don't know about that being so "efficent". seems like it would disrupt the flow of air into the turbo. The open amptophere allows the air on the intake side to be discharged so that the new charged air flows faster and also has no disruption on the shift. ????? so....?????
#15
03-13-2008 | 10:19 PM
1st Gear
Joined: Jun 2007
Posts: 159
From:
RE: DV relocation???
ORIGINAL: pimphell
But. why move DV if a BOV would be a better addition??? I would rather have a open apmosphere BOV by the intake instead of a DV. Kinda pointless? Unless you wanted to recirrculate for some reason?
But. why move DV if a BOV would be a better addition??? I would rather have a open apmosphere BOV by the intake instead of a DV. Kinda pointless? Unless you wanted to recirrculate for some reason?
https://www.audiforums.com/m_14128/tm.htm
The Audi turbo system is a closed loop system by which all unused boost that is spooled during off throttle and gear shifts must be re-routed within the system; it cannot be vented to the atmosphere due to the dependence on the MAF and ECU to properly read and interpret air flow dynamics within the intake tract. Therefore BOV's (Blow-Off Valves) are not used because they create a rich air/fuel condition (i.e. less air to fuel ratio) which will damage the catalytic converter, create soot on the exhaust pipes, and cause occasional misfiring (due to the purged air) which will result in ECU miscalculated timing adjustments and other errors.
#17
03-13-2008 | 10:25 PM
Senior Member
Joined: Jan 2008
Posts: 361
From: Colorado Springs, CO
RE: DV relocation???
ORIGINAL: Audi311
https://www.audiforums.com/m_14128/tm.htm
The Audi turbo system is a closed loop system by which all unused boost that is spooled during off throttle and gear shifts must be re-routed within the system; it cannot be vented to the atmosphere due to the dependence on the MAF and ECU to properly read and interpret air flow dynamics within the intake tract. Therefore BOV's (Blow-Off Valves) are not used because they create a rich air/fuel condition (i.e. less air to fuel ratio) which will damage the catalytic converter, create soot on the exhaust pipes, and cause occasional misfiring (due to the purged air) which will result in ECU miscalculated timing adjustments and other errors.
ORIGINAL: pimphell
But. why move DV if a BOV would be a better addition??? I would rather have a open apmosphere BOV by the intake instead of a DV. Kinda pointless? Unless you wanted to recirrculate for some reason?
But. why move DV if a BOV would be a better addition??? I would rather have a open apmosphere BOV by the intake instead of a DV. Kinda pointless? Unless you wanted to recirrculate for some reason?
https://www.audiforums.com/m_14128/tm.htm
The Audi turbo system is a closed loop system by which all unused boost that is spooled during off throttle and gear shifts must be re-routed within the system; it cannot be vented to the atmosphere due to the dependence on the MAF and ECU to properly read and interpret air flow dynamics within the intake tract. Therefore BOV's (Blow-Off Valves) are not used because they create a rich air/fuel condition (i.e. less air to fuel ratio) which will damage the catalytic converter, create soot on the exhaust pipes, and cause occasional misfiring (due to the purged air) which will result in ECU miscalculated timing adjustments and other errors.
#18
03-13-2008 | 10:25 PM
I'm make believe
Joined: Dec 2006
Posts: 17,587
From: In my head
RE: DV relocation???
^ you are just blowing smoke now
That is full of bunk when used with a correct bov. I have shown that 100+ times now
ORIGINAL: Audi311
https://www.audiforums.com/m_14128/tm.htm
The Audi turbo system is a closed loop system by which all unused boost that is spooled during off throttle and gear shifts must be re-routed within the system; it cannot be vented to the atmosphere due to the dependence on the MAF and ECU to properly read and interpret air flow dynamics within the intake tract. Therefore BOV's (Blow-Off Valves) are not used because they create a rich air/fuel condition (i.e. less air to fuel ratio) which will damage the catalytic converter, create soot on the exhaust pipes, and cause occasional misfiring (due to the purged air) which will result in ECU miscalculated timing adjustments and other errors.
https://www.audiforums.com/m_14128/tm.htm
The Audi turbo system is a closed loop system by which all unused boost that is spooled during off throttle and gear shifts must be re-routed within the system; it cannot be vented to the atmosphere due to the dependence on the MAF and ECU to properly read and interpret air flow dynamics within the intake tract. Therefore BOV's (Blow-Off Valves) are not used because they create a rich air/fuel condition (i.e. less air to fuel ratio) which will damage the catalytic converter, create soot on the exhaust pipes, and cause occasional misfiring (due to the purged air) which will result in ECU miscalculated timing adjustments and other errors.
#19
03-14-2008 | 03:44 AM
Senior Member
Joined: Oct 2007
Posts: 1,037
From:
RE: DV relocation???
ORIGINAL: cincyTT
Not to mention not everyone wants the attention.
Not to mention not everyone wants the attention.
Audi311, if you do a split, your car can run just fine. Plus, it's not like if you run a BOV on an a4, it'll break within a day. Not even a week. ****, not even within a year will you start to notice things go wrong. It takes a very long time for your car to build up these problems that you're talking of.