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Old 05-25-2012, 08:35 PM   #1
Roush PSD Interceptor
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Default Installed a MBRP 4" Exhaust pics and vids

Installed the 4" MBRP.
Well it took longer than I expected but it's on
and everything is tight.
Drove it into town and not one rattle but I'm checking all
the clamps and clearances later any way.
Fighting the downpipe band clamp took longer than anything.
The factory installed position is in the back so it's hard to get to
and once loosened the ratchet binds into the firewall insulation.

So after trial and error the band clamp kept rotating down instead of up where I could get to it. I made a heavy wire hook that let me pull
it back up over the top. I used my 18V Li-Ion Milwaukee Sawzall
to cut the down pipe off at the bell housing.
Then a cut behind the Walker Big Truck Muffler to remove old system.

Started at the end of the downpipe fitting
pieces together per diagram installation instructions.
Cut the pipe before the muffler delete short about 14".
Started at the tailpipe adjusting and tightening clamps working toward
the front. The downpipe clamp was the last one tightened.

Bent the transmission / passenger floorboard heat shield a little for
clearance issues but not much.

I had dropped the pyrometer sensor fitting down in the engine
fighting the downpipe clamp but luckily found it by the driver's
front tire. Removing the MAP sensor from the top of the A/C
evaporator box made it a lot easier to access the limited space to the downpipe clamp.

Vid of system before removal

Exhaust sound before tear-down.

Out with the old, BTM - Big Truck Muffler by Walker.


Wiping everything down before paint.


Murdered out MBRP


Stock downpipe vs 4" MBRP


Pilot hole for pyrometer fitting


11/64th hole before tapping


Starting the tap


Tight fit


Seated pyrometer fitting


Downpipe and band clamp tightened after entire system under the truck is tight starting from the tailpipe forward


Note band clamp is turned so ya can get to it instead of being against the firewall from factory.
EGT sensor installed, nicked the paint-job, touch up time


Wife shot the after sound vid for me.
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Old 05-25-2012, 11:42 PM   #2
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sounds like mine! ha ha, i wish i painted mine black. The guy I traded for mine owned the shop and installed it for me in about 45mins.
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Old 05-26-2012, 11:58 AM   #3
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Looks like I will need a heat shield for the spare tire,
the over axle pipe is very close @ the mounted spare.

There is a bracket there for it, I just need to make one
out of sheet metal.
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Old 05-26-2012, 12:49 PM   #4
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Nice, downpipe was the hardest on mine too!

Do you just have pyro in downpipe? or do you have manifold and downpipe to see the delta in temps?
Just curious as I have thought about that setup.
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Old 05-26-2012, 07:52 PM   #5
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Just the downpipe on mine,
I've heard the manifold pyro is a
more accurate measure of EGTs.
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Old 05-26-2012, 11:19 PM   #6
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Yeah, supposedly so. I have mine in the manifold currently. I dont know if one is better than the other really. I know temps should be a couple hundred degrees cooler in the downpipe so as long as you keep that in mind and know what the max temp is there compared to the manifold.
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Old 05-27-2012, 12:07 AM   #7
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Great write up and it sounds alot better!! Nice work.
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Old 08-07-2012, 10:52 PM   #8
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Sounds really good now my 3 yr old wants to watch it again?
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Old 08-08-2012, 12:05 AM   #9
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Originally Posted by SUPERxDUTYxV10 View Post
Sounds really good now my 3 yr old wants to watch it again?
Sweet man lol teach em while they are young
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Old 08-08-2012, 01:44 AM   #10
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Originally Posted by UTAHFORD View Post
Sweet man lol teach em while they are young
Yeah and he always tells me I need a diesel truck. Lol
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