Installed Riffraff OCR
Thread Starter
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Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Installed Riffraff OCR
The Riffraff OCR (Overboost Code Regulator) is a great piece of hardware. Quality, quality, quality.
MAP sensor mounted to new bracket.
Applied 35 PSI and the OCR, as advertised, would only pass 22 PSI. No de-fueling under WOT.
Looks nice under the hood and was a breeze to install. I added the 1/2" split loom.
The 1/2" split loom is a tight fit so add it before final install.
If you're tuned or chipped or experiencing de-fueling when you mash the loud pedal this should be on your PMS list.
Or, as in my case, if you have to keep adjusting the overboost regulator you have, replace it with the Riffraff OCR.
MAP sensor mounted to new bracket.
Applied 35 PSI and the OCR, as advertised, would only pass 22 PSI. No de-fueling under WOT.
Looks nice under the hood and was a breeze to install. I added the 1/2" split loom.
The 1/2" split loom is a tight fit so add it before final install.
If you're tuned or chipped or experiencing de-fueling when you mash the loud pedal this should be on your PMS list.
Or, as in my case, if you have to keep adjusting the overboost regulator you have, replace it with the Riffraff OCR.
Posting Guru
Joined: Jul 2004
Posts: 1,777
Likes: 0
From: Buckingham, IA
Thanks for the tip, Robin. I've been getting "the light" when pulling our flatbed tandem dually even with the old Superchips tuner set to "tow". Adding another item to the "gotta do" list.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,111
From: Rio Rico, AZ.
At around 24 psi, if you don't have that pressure regulator installed, the computer will cut off the fuel and turn on the SES light.
It's a major PITA to be pulling a large trailer up the mountain pass and right when it's pulling good, have the engine cut out on you.
Clay, that's a nice piece of hardware. Kudos.
It's a major PITA to be pulling a large trailer up the mountain pass and right when it's pulling good, have the engine cut out on you.
Clay, that's a nice piece of hardware. Kudos.
Elder User
Joined: Jun 2009
Posts: 999
Likes: 0
From: Easley, SC 29640
At around 24 psi, if you don't have that pressure regulator installed, the computer will cut off the fuel and turn on the SES light.
It's a major PITA to be pulling a large trailer up the mountain pass and right when it's pulling good, have the engine cut out on you.
Clay, that's a nice piece of hardware. Kudos.
It's a major PITA to be pulling a large trailer up the mountain pass and right when it's pulling good, have the engine cut out on you.
Clay, that's a nice piece of hardware. Kudos.
Oh...i guess i just don't have that issue...or dunno what to look for...i do know that my SES doesn't come on for anything...and i hammer the crap out of my truck when it's loaded or empty (trying to break stuff to have an excuse to PMS...
)
Thread Starter
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Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
If the PCM sees boost at about 23 PSI or higher, via a signal from the MAP sensor, it de-fuels to decrease the drive pressure and lessen stress on the turbo. The OCR will not let any boost above 22 PSI reach the MAP sensor so even if the real boost is 28 PSI the PCM will only see 22 PSI tops, thus no de-fueling. The OCR in effect is a MAP sensor fooler.
Postmaster
Joined: Jul 2004
Posts: 3,156
Likes: 0
From: Yuba City, CA.
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Posting Guru
Joined: Sep 2005
Posts: 2,476
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From: Monroe Michigan
That looks nice Robin, would like even nicer with some "CHROME NUTS". I've heard you have some. 
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Thread Starter
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Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
.Stop mashing the skinny pedal. Problem solved.
You've got a couple PMs from me. Check them out.
Postmaster
Joined: Jan 2009
Posts: 2,544
Likes: 4
From: Suffolk, VA
So how does this compare to an air compressor regulator where I see fluctuations in its output based on the input pressure. In other words at 25 psi input I can regulate it to 22 psi out, but then if I apply 35 psi to it, it doesn't regulate tot he same 22 psi. And at pressure inputs less than 22 psi it can get a little funny too.
I once tried an OBA from either Dieselsite or ITP that was a sort of blow off valve. All that did was bleed of boost pressure that I've worked so hard to produce and I hated it. Been looking for something that doesn't bleed off pressure to the atmosphere but is more accurate than an air compressor regulator. This might just be it.
I once tried an OBA from either Dieselsite or ITP that was a sort of blow off valve. All that did was bleed of boost pressure that I've worked so hard to produce and I hated it. Been looking for something that doesn't bleed off pressure to the atmosphere but is more accurate than an air compressor regulator. This might just be it.
Postmaster
Joined: Jul 2006
Posts: 4,993
Likes: 2
From: Bend, OR
So how does this compare to an air compressor regulator where I see fluctuations in its output based on the input pressure. In other words at 25 psi input I can regulate it to 22 psi out, but then if I apply 35 psi to it, it doesn't regulate tot he same 22 psi. And at pressure inputs less than 22 psi it can get a little funny too.
I once tried an OBA from either Dieselsite or ITP that was a sort of blow off valve. All that did was bleed of boost pressure that I've worked so hard to produce and I hated it. Been looking for something that doesn't bleed off pressure to the atmosphere but is more accurate than an air compressor regulator. This might just be it.
I once tried an OBA from either Dieselsite or ITP that was a sort of blow off valve. All that did was bleed of boost pressure that I've worked so hard to produce and I hated it. Been looking for something that doesn't bleed off pressure to the atmosphere but is more accurate than an air compressor regulator. This might just be it.
ITP sells the regulator just like this one...
Cargo Master
Joined: Apr 2009
Posts: 2,135
Likes: 0
From: Man Cave
I was a bit surprised by the price of Clay's OCR compared to others. That was until I received it. It is well thought out, of the highest of quality and looks (as does all Clays gear) excellent. He really puts alot of effort into he's designs. Hes products are a direct reflection of he's amount of knowledge of these trucks.
Thread Starter
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Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
So how does this compare to an air compressor regulator where I see fluctuations in its output based on the input pressure. In other words at 25 psi input I can regulate it to 22 psi out, but then if I apply 35 psi to it, it doesn't regulate tot he same 22 psi. And at pressure inputs less than 22 psi it can get a little funny too.
I once tried an OBA from either Dieselsite or ITP that was a sort of blow off valve. All that did was bleed of boost pressure that I've worked so hard to produce and I hated it. Been looking for something that doesn't bleed off pressure to the atmosphere but is more accurate than an air compressor regulator. This might just be it.
I once tried an OBA from either Dieselsite or ITP that was a sort of blow off valve. All that did was bleed of boost pressure that I've worked so hard to produce and I hated it. Been looking for something that doesn't bleed off pressure to the atmosphere but is more accurate than an air compressor regulator. This might just be it.
Postmaster
Joined: Jul 2006
Posts: 4,993
Likes: 2
From: Bend, OR
I like the looks of Clays... but I would not knock the "other" version...