what's going on everybody welcome back to the btr garage my name is justin today we're going to be
talking about boost relief valves for your ford 7.3 or 6.0 power stroke diesel engines
we're going to talk a little bit about why you might need a boost relief valve
and how to install it so let's go ahead and get started
so what is a boost relief valve and when or why might you actually need one for your ford
7.3 or 6.0 power stroke diesel well like the name suggests the boost relief valve actually relieves
boost pressure from the valve itself it's a simple little valve that has an input port and output
port and then a relief valve built into it and you install it in the line that goes from your
turbocharger to your manifold absolute pressure sensor which is kind of back here in the corner
i'll show you in a little bit in more detail how to install it and where it goes and what
the relief valve does basically is fools your map sensor into thinking there is less boost going
to the engine now when would you actually want to install one of these and fool your computer
into thinking there is less boost going into the engine well if your truck is bone stock the answer
is easy you're never going to want one of these anyways you're not going to make enough boost to
necessitate this particular modification however if you have a truck that has common upgrades
like an intake and exhaust a chip or a tuner from the aftermarket that increases boost and adjusts
the tune for the truck there's a pretty good chance you might need one of these boost relief
valves oftentimes what happens when you install these upgrades specifically things like a tuner
and for me i didn't start seeing this issue until i installed the upgraded turbo compressor wheel
into the compressor but you're going to be making more boost with the modifications and the tunes
and sometimes the engine sees that as a bad thing and will trigger a check engine light or a service
engine soon light and when that happens what the truck does to keep things safe is it'll actually
try to reduce the boost level by taking fuel away from the engine and maybe some other things as
well preventative safety measures in order not to cause any damage to the truck however these
engines have been around for a long long time now there's all kinds of evidence in history that
shows how stout and strong they are and they can hold up to the higher amounts of boost pressures
as long as it's not for a super extended period of time so what the boost relief valve then does
is allows you to run the higher boost levels in the engine without the computer triggering
a check engine light now installing one of these boost relief valves into your truck is super super
easy it's probably one of the easiest things you can do on the truck from an upgrade standpoint
now if you're interested in the boost relief valve that i am using you can check it out in the links
below in the description now to install this thing it's as simple as just cutting the hose that goes
from your turbocharger compressor to your manifold absolute pressure sensor or your map sensor
basically cut that line stick the valve in between the two lines and that's pretty much it if you
have a boost gauge or something like that you can also install that line into the boost relief valve
so you can see exactly how much boost pressure is going to the truck before it gets relieved by
the relief valve hopefully that made sense it'll make a little bit more sense in the pictures which
i'll start right now that show you how to install this and i actually installed this boost relief
valve when i was out at the race track i never had this issue until like i mentioned i installed the
upgraded turbocharger compressor into my turbo and i was heading straight to a race out in utah and
immediately i had over boost condition where i was making 35 pounds of boost in the truck computer
didn't like that so i had the check engine light i had the part mailed to my brother in utah
and basically grabbed it there at the house and installed it out at the racetrack in about 10
minutes so super easy we'll walk you through it and then maybe we'll take a drive in the truck and
see how much boost we're making these days so open up the hood of your truck grab your boost relief
valve which we have a close-up right here you can see it says to the map sensor pointing to the left
identify the hose in the engine bay which is highlighted by the yellow arrows here
at the left end of that hose you'll see your map sensor this is just a close-up of that pointing
it out we'll mock up what our boost relief valve looks like with the hoses still connected
and if you're like me and you have a boost gauge in your truck already i'm pointing out
the t connector for the boost valve line right there or the boosted gauge rather excuse me
i'm going to pop that off because we need to remove it if you don't have
one of those boost gauges you're just going to cut the line in two as you can see here
the line is cut or in my case i had just removed that t fitting and now we can go ahead and
install the boost relief valve again to the map sensor is pointing to the left we've attached that
hose on the left side and now we've attached the hose on the right side
of the boost relief valve make sure you have those hose clamps on your hoses before you attach them
to the boost relief valve if not you'll have to take it off here is a zoomed out view of
the boost relief valve attached and a zoomed in view with our hose clamps attached to either end
if you have that boost gauge like i did you're going to want to remove this plug on the right
hand side of the boost relief valve once the plug is removed insert the fitting for the boost gauge
and screw the boost gauge line onto the fitting here's what it looks like when
everything is put together and we'll do a little video walk around of the finished product as well
all right full throttle
there's 30 pounds and i'm going way too fast for this road
so 30 pounds of boost on that run with the uh
80 horsepower tune let's uh we can pull it over and try to get the 120 horsepower tune
actually i should be able to switch it right here because we're decelerating
all right we're on the 120 tune green light
there's 32 hit 32
and there's a truck on the side of the street here so we had 32 pounds of boost that time with the
truck unloaded it's not going to boost quite as high but that was pretty dang high for unloaded
all right everybody that's going to wrap it up for today's video
super easy upgrade for your truck if you already have engine or tuner modifications done to the
vehicle boost relief valve will allow you to see maximum power to your truck in those high boost
situations if you have any thoughts comments or questions please leave them down below like
usual i would love to hear from you stick around for more videos coming up real soon here stay
safe out there everybody i am checking out and we'll talk to you all next time
foreign