New Way Of Boost Ctrl
New Way Of Boost Ctrl
what do the UTEC people think of the following boost control method
https://www.evolutionm.net/forums/sh...d.php?t=156692
https://www.evolutionm.net/forums/sh...d.php?t=156692
I tried this at one point, ended up not working because the stock ECU was trying to do the opposite and ended up overboosting when the ECU was controlling it and it was trying to cut boost.. It can work if you can directly control the solenoid 100% of the time.. But you won't need the restrictors any longer and you gain a greater range of boost control..
In reality, it didn't work that well, especially if the wiring or solenoid malfunctioned and it remained closed. ( think the normal state of the solenoid with no voltage present is closed, and that would cause overboost) you want a solenoid that is normally open when no signal is present in this configuration.
In reality, it didn't work that well, especially if the wiring or solenoid malfunctioned and it remained closed. ( think the normal state of the solenoid with no voltage present is closed, and that would cause overboost) you want a solenoid that is normally open when no signal is present in this configuration.
for safety if it malfunctioned it will have boost spike up the roof.
but in normal operation mode is it better to have it closed at all times since the boost can built quicker ?
What about the speed of the Solenoid, was it fast enough to open the wasetegate when it needs to ?
I was thinking to move the solenoid right next to the turbo wastgate.
so the pressure can be right there without any waiting when I want the wastegate to open.
please comment
tks
David
but in normal operation mode is it better to have it closed at all times since the boost can built quicker ?
What about the speed of the Solenoid, was it fast enough to open the wasetegate when it needs to ?
I was thinking to move the solenoid right next to the turbo wastgate.
so the pressure can be right there without any waiting when I want the wastegate to open.
please comment
tks
David
Originally Posted by MalibuJack
I tried this at one point, ended up not working because the stock ECU was trying to do the opposite and ended up overboosting when the ECU was controlling it and it was trying to cut boost.. It can work if you can directly control the solenoid 100% of the time.. But you won't need the restrictors any longer and you gain a greater range of boost control..
In reality, it didn't work that well, especially if the wiring or solenoid malfunctioned and it remained closed. ( think the normal state of the solenoid with no voltage present is closed, and that would cause overboost) you want a solenoid that is normally open when no signal is present in this configuration.
In reality, it didn't work that well, especially if the wiring or solenoid malfunctioned and it remained closed. ( think the normal state of the solenoid with no voltage present is closed, and that would cause overboost) you want a solenoid that is normally open when no signal is present in this configuration.
Evolving Member
Joined: Feb 2004
Posts: 184
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Originally Posted by superman105
for safety if it malfunctioned it will have boost spike up the roof.
but in normal operation mode is it better to have it closed at all times since the boost can built quicker ?
What about the speed of the Solenoid, was it fast enough to open the wasetegate when it needs to ?
I was thinking to move the solenoid right next to the turbo wastgate.
so the pressure can be right there without any waiting when I want the wastegate to open.
please comment
tks
David
but in normal operation mode is it better to have it closed at all times since the boost can built quicker ?
What about the speed of the Solenoid, was it fast enough to open the wasetegate when it needs to ?
I was thinking to move the solenoid right next to the turbo wastgate.
so the pressure can be right there without any waiting when I want the wastegate to open.
please comment
tks
David
Jermaine~
how will that setup control boost?????
the stock solenoid is normally open. that means it is allways opens and closes when the desired boost level is reeched. that is why the the comp houseing and wastegate actuator is connected with a T because when the desired output is reached the solenoid closes causing the pressure to backup and open the wastegate.
id the diagram you have posted a stock solenoid will not function correctly because its normally open... the wastegate will allways be opening until enough boost is built to start to close the solenoid causing the car to over boost when the wastegate can not accuate. you might as well just take the vac line off the wastegate because atleast then the turbo will spool faster.
the stock solenoid is normally open. that means it is allways opens and closes when the desired boost level is reeched. that is why the the comp houseing and wastegate actuator is connected with a T because when the desired output is reached the solenoid closes causing the pressure to backup and open the wastegate.
id the diagram you have posted a stock solenoid will not function correctly because its normally open... the wastegate will allways be opening until enough boost is built to start to close the solenoid causing the car to over boost when the wastegate can not accuate. you might as well just take the vac line off the wastegate because atleast then the turbo will spool faster.
