Boost Relief Valve
Boost Relief Valve
Postmaster
Joined: Jan 2004
Posts: 4,758
Likes: 7
From: colorado
www.dieselsite.com, i got mine from there and it works fine $29.00. if i where to do it again i think i would get one from www.itpdiesel.com. its a little more money but it looks like a nicer unit
Last edited by FTE Ken; Mar 10, 2005 at 03:12 PM.
Elder User
Joined: Feb 2000
Posts: 737
Likes: 0
From: LAKE FORK TEXAS
I got the single releif valve from diesel manor for about 27 bucks shipped,, they were the cheapest i could find. If only it would work 
I still get the over boost light. I even moved it close as i could to the map sensor and as far away and made no difference. Have taken it apart several times too,, I'm clueless. I hear the double valve units work much better.
I still get the over boost light. I even moved it close as i could to the map sensor and as far away and made no difference. Have taken it apart several times too,, I'm clueless. I hear the double valve units work much better.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,111
From: Rio Rico, AZ.
Originally Posted by MRBASS
I got the single releif valve from diesel manor for about 27 bucks shipped,, they were the cheapest i could find. If only it would work
I still get the over boost light. I even moved it close as i could to the map sensor and as far away and made no difference. Have taken it apart several times too,, I'm clueless. I hear the double valve units work much better.
I still get the over boost light. I even moved it close as i could to the map sensor and as far away and made no difference. Have taken it apart several times too,, I'm clueless. I hear the double valve units work much better.
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Lead Driver
Joined: Apr 2003
Posts: 9,965
Likes: 1
From: H-town, MN
How do you know if its defueling? Is it a noticable feeling? I have same valve and not sure if it is working properly. The SES light comes on and then goes off and it doesn't read a code when I try ro pull one. I think I should try orifice to find out if it makes any difference. 
Senior User
Joined: Jul 2004
Posts: 266
Likes: 0
From: Reading,PA
Well if you have gauges it doesn't go over a certain PSI and your highest boost number you will see the SES. Usually around 22psi! Runnin stock I found it hard to get it to that point, so do all the proper mods to enable your truck to do this safely!!!
Elder User
Joined: Sep 2004
Posts: 780
Likes: 1
From: Chicago suburbs
Originally Posted by MRBASS
I got the single releif valve from diesel manor for about 27 bucks shipped,, they were the cheapest i could find. If only it would work
I still get the over boost light. I even moved it close as i could to the map sensor and as far away and made no difference. Have taken it apart several times too,, I'm clueless. I hear the double valve units work much better.
I still get the over boost light. I even moved it close as i could to the map sensor and as far away and made no difference. Have taken it apart several times too,, I'm clueless. I hear the double valve units work much better.
When you took apart the BRV, did you notice that one of the brass hose fittings has a restrictor installed? This restrictor should be on the MAP side of the BRV. So the higher pressure goes out the pop-off valve, lower pressure to the MAP sensor. If the restrictor is not installed (or on the wrong side of the BRV), MAP will see high pressure.
Elder User
Joined: Feb 2000
Posts: 737
Likes: 0
From: LAKE FORK TEXAS
It all seems to be right, thats what is strange. I did think about some wd 40 in it,, Wasnt sure how that might effect the MAP Sensor though. Havent really messed with it lately but might try again tomorrow, might ad some hose too and see what that does. I dont really notice a difference when the SES light comes on at about 26lbs, Still pegs the gauge at 30 too if i stay in it.When i switched back to the factory airbox i did notice the light didnt come on as fast. With the kwik filter it comes on almost immediately when you mash it,obviously much better flow.
Elder User
Joined: Sep 2004
Posts: 780
Likes: 1
From: Chicago suburbs
Originally Posted by MRBASS
...I did think about some wd 40 in it,, Wasnt sure how that might effect the MAP Sensor though....
Test your BRV and make sure its not going over 22Lbs or so. Just place your boost gauge between the MAP and BRV.