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DIESELSITE 94.5-07 7.3L & 6.0L Overboost Relief Valve - BRV+

ELIMINATE the SES light caused by OVERBOOST. Now with boost gauge ports to monitor MAP and actual boost.
Pricing: $65.00



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 Plus) will relieve any excess pressure 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. 

The boost relief valve is installed in the line to the map sensor. This line is located on the passenger side of the engine compartment and runs over the intercooler tube right behind the oil fill tube. Make sure the arrow is pointing towards the map sensor. 

By designing a CNC machined valve, every BRV+ will work flawlessly and exactly alike.  Every valve, in order to work correctly, MUST have a precise orifice sized for proper volume control as well as the blow off valve.  We have machined the BRV+ so that there is no chance of human error when creating the small orifices necessary to make the valves work. You get quality precision pieces, every time. The new valve provides a clean looking installation with less weight. (5.1 oz. vs. 3.7 oz.)

BRV+ ports come plugged in case you're not using them. To install a boost gauge, simply remove one plug and install your boost fitting.  Our pictures below show the BRV+ installed with a boost gauge in each port.  This is done to measure your actual boost and what the map sensor sees at the same time -- this requires two boost gauges.

Special Note: Both ports come from us with plugs installed. Your boost gauge should come with the fittings needed to install a boost line to the valve. Should you not have them, or your gauge did not come with them, these can be obtained at any hardware store. Simply ask for a 1/8" npt (national pipe thread) x 1/8" compression. This is a standard plumbing fitting.



Question:  Will the BRV eliminate my SES light?

Answer:  If your SES light is caused by OVERBOOST then our unit will fix the problem. What our BRV will NOT cure is an SES light caused by some other code.  To be sure that you have an OVERBOOST issue that our BRV will eliminate you will have to make note of the following the next time your SES light comes on:

  • Does your SES light come on and go back out after about 1 to 1 1/2 minutes?  If so, that's indicative of an OVERBOOST code and we can help you with our BRV to eliminate it.
  • If your SES light stays on until you shut off your truck or comes on and goes back off based on throttle response as you step down or let off the throttle then you do NOT have an OVERBOOST caused SES light. Our BRV will NOT help you in this case.  Check for an ICP code or Exhaust Backpressure code.  A scanner or tuner with diagnostics can find these for you.
  • With our BRV+, you can simply move your boost gauge line to the MAP side of the valve and actually SEE whatthe MAP is seeing. This will eliminate any wonder if the SES light is from overboost.


Question: How do I install a boost gauge using the BRV+?

Answer: You can simply install your boost fitting right into the BRV+ into the respective ports. If you want to see MAP readings or actual turbo boost, you can now do this with no extra cutting of lines.

Question: Why does your valve blow off at 20 lbs. of boost pressure?  I have seen others out there that claim they don't start to blow off until 25 lbs.

Answer: Most likely those vendors may not understand the product they are selling. There are many knock-offs our there since the our original BRVs showed up on the market 6 years ago.  At 17 lbs. of pressure the computer is at 100% fuel map.  Therefore, it is delivering all the fuel that the injectors can deliver - whatever amount that may be based on any upgrades or modifications that you have - if any.  You do not need a valve that blows off at a higher number than 20 lbs. 

Why strive for more boost then? Well, more engine boost provides for more engine efficiency and adds more air to the current amount of fuel therefore adding more power. POWER. POWER. POWER.

Question:  Are you sure that I only need a unit with one valve?  I see another with two valves for sale.

Answer:  A design flaw in the unit we saw with two valves actually dumps off engine boost, not just map sensor boost readings. This is not desirable.  Unlike a BRV+ or even a regulator, you may NEVER reach your maximum set pressure.  Designed correctly, one valve should be ALL that you use to overcome your overboost issues.  Our BRV+ supports our truck's 50+ lbs. of boost!!!  We had the first Boost Relief Valve for the Powerstroke on the market and have a complete understanding of what they do and why.  Understanding the product you sell is the most important service you can provide to your customers. 

Question:  I've heard this is a boost leak. I don't want to loose my hard earned boost. Is this true?

Answer: The BRV+ does "dump" air to relieve the MAP line, but the orifice inside the BRV+ restricts the volume of air entering the valve and the MAP line. The amount of air lost at even 50+lbs of boost would be equivalent to loosing a thimble full in a house full of air. We're not talking about even a fraction of one psi of air. So, to call it a "boost leak" is splitting hairs and looking for a reason to mislead the public.

Question:  I've seen some use simple air compressor regulators. Why shouldn't we use them?

Answer: Below area a few images to help illustrate the problem with regulators. This test was done using a $20.00 regulator from Home Depot. Not a cheap one at all. We hooked up some lines and made a bench test of sorts to measure turbo boost (large compressor gauge) and MAP sensor boost readings (small gauge). We adjusted the MAP regulator to see 22 lbs. when the turbo boost was 30lbs. Consider this an average truck that might be in need of a relief valve. We also checked the calibration of the two gauges and they were within < 1 lb. at 40 lbs. of pressure.

Shipping Information

  • Item Requires Shipping
  • 1.0 lbs.
  • W10.0000” x H6.0000” x L2.0000”

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