Boost Relief Valve
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Junior User
Joined: Oct 2002
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Boost Relief Valve
I was getting ready to purchase my gauges from a website and I was told that I would need a "Boost Relief Valve" if I planned to "Chip" my truck eventually.
Here's the claim from the website:
The SES light for overboost will come on at about 25 lbs. causing the PCM to decrease fuel delivery attempting to control the boost. This condition usually occurs in "chipped" vehicles. Our BRV(Boost Relief Valve) will relieve any excess pressure over 16 lbs. to the map sensor, while allowing the engine to receive full boost. No more SES light and full fuel delivery through all RPM and boost ranges.
From what I gather the boost gauge would not read more than 16 psi.
I've read some threads were folks have seen the boost on their gauge go to 24 - 30 psi and even higher.
Nowhere in any threads have I read anything about this relief valve. Is this valve really needed ??
Can anybody elaborate on this...
Thanks,
Here's the claim from the website:
The SES light for overboost will come on at about 25 lbs. causing the PCM to decrease fuel delivery attempting to control the boost. This condition usually occurs in "chipped" vehicles. Our BRV(Boost Relief Valve) will relieve any excess pressure over 16 lbs. to the map sensor, while allowing the engine to receive full boost. No more SES light and full fuel delivery through all RPM and boost ranges.
From what I gather the boost gauge would not read more than 16 psi.
I've read some threads were folks have seen the boost on their gauge go to 24 - 30 psi and even higher.
Nowhere in any threads have I read anything about this relief valve. Is this valve really needed ??
Can anybody elaborate on this...
Thanks,
Laughing Gas
Joined: Feb 2004
Posts: 974
Likes: 5
From: FLA
Originally Posted by SBV45
I was getting 31 psi WOT with the factory tune. That was verified with the diesel tech sitting next to me with his WDS computer hooked up
Postmaster
Joined: Aug 2003
Posts: 4,483
Likes: 2
From: Central Texas
There are boost relief valves on some turbo systems used with a Garrett turbo. I had one fail on me during a max performance takeoff in a helicopter.
We don't have one on the 6.0's that I am aware.
We don't have one on the 6.0's that I am aware.
FTE Leadership Emeritus
Joined: Jan 2003
Posts: 161,999
Likes: 75
From: 3rd Rock
Originally Posted by AKESPY
I was getting ready to purchase my gauges from a website and I was told that I would need a "Boost Relief Valve" if I planned to "Chip" my truck eventually.
Here's the claim from the website:
The SES light for overboost will come on at about 25 lbs. causing the PCM to decrease fuel delivery attempting to control the boost. This condition usually occurs in "chipped" vehicles. Our BRV(Boost Relief Valve) will relieve any excess pressure over 16 lbs. to the map sensor, while allowing the engine to receive full boost. No more SES light and full fuel delivery through all RPM and boost ranges.
From what I gather the boost gauge would not read more than 16 psi.
I've read some threads were folks have seen the boost on their gauge go to 24 - 30 psi and even higher.
Nowhere in any threads have I read anything about this relief valve. Is this valve really needed ??
Can anybody elaborate on this...
Thanks,
Here's the claim from the website:
The SES light for overboost will come on at about 25 lbs. causing the PCM to decrease fuel delivery attempting to control the boost. This condition usually occurs in "chipped" vehicles. Our BRV(Boost Relief Valve) will relieve any excess pressure over 16 lbs. to the map sensor, while allowing the engine to receive full boost. No more SES light and full fuel delivery through all RPM and boost ranges.
From what I gather the boost gauge would not read more than 16 psi.
I've read some threads were folks have seen the boost on their gauge go to 24 - 30 psi and even higher.
Nowhere in any threads have I read anything about this relief valve. Is this valve really needed ??
Can anybody elaborate on this...
Thanks,
Thread Starter
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Junior User
Joined: Oct 2002
Posts: 63
Likes: 0
Thanks for the replies. So no one is getting an overboost check engine light and losing power if they exceed 25 psi of boost.
So the following statement from a diesel website has no merit ?
The SES light for overboost will come on at about 25 lbs. causing the PCM to decrease fuel delivery attempting to control the boost.
So the following statement from a diesel website has no merit ?
The SES light for overboost will come on at about 25 lbs. causing the PCM to decrease fuel delivery attempting to control the boost.
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Laughing Gas
Joined: Feb 2004
Posts: 974
Likes: 5
From: FLA
Originally Posted by AKESPY
Thanks for the replies. So no one is getting an overboost check engine light and losing power if they exceed 25 psi of boost.
So the following statement from a diesel website has no merit ?
The SES light for overboost will come on at about 25 lbs. causing the PCM to decrease fuel delivery attempting to control the boost.
So the following statement from a diesel website has no merit ?
The SES light for overboost will come on at about 25 lbs. causing the PCM to decrease fuel delivery attempting to control the boost.
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Postmaster
Joined: Aug 2003
Posts: 4,483
Likes: 2
From: Central Texas
Originally Posted by AKESPY
Thanks for the replies. So no one is getting an overboost check engine light and losing power if they exceed 25 psi of boost.
So the following statement from a diesel website has no merit ?
The SES light for overboost will come on at about 25 lbs. causing the PCM to decrease fuel delivery attempting to control the boost.
So the following statement from a diesel website has no merit ?
The SES light for overboost will come on at about 25 lbs. causing the PCM to decrease fuel delivery attempting to control the boost.
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