Installed Riffraff OCR
Fleet Mechanic
Joined: Jun 2009
Posts: 1,866
Likes: 8
From: Fleetwood, PA
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.
Elder User
Joined: Jun 2009
Posts: 999
Likes: 0
From: Easley, SC 29640
the worst part is...you guys genuwinely made an attempt to help me understand what this OCR does, and i have remained a loyal reader hoping i could truly understand this...alas, there's no hope of that happening...lol...i might as well be trying to read chinese with german glasses on...wtf...i'm so confused right now...lmao
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Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
the worst part is...you guys genuwinely made an attempt to help me understand what this OCR does, and i have remained a loyal reader hoping i could truly understand this...alas, there's no hope of that happening...lol...i might as well be trying to read chinese with german glasses on...wtf...i'm so confused right now...lmao
Thread Starter
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Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
That's right Eric. The "no codes" tunes.
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
the worst part is...you guys genuwinely made an attempt to help me understand what this OCR does, and i have remained a loyal reader hoping i could truly understand this...alas, there's no hope of that happening...lol...i might as well be trying to read chinese with german glasses on...wtf...i'm so confused right now...lmao
Now the boost foolers don't let the PCM see anything above 22psi or so. So the PCM will continue to fuel up to full throttle based on pedal input demanded by the old right foot. This can allow folks with stock turbos to run with up to 30psi of boost in some cases.
This is how folks with aftermarket turbos can make 35-50 to even more boost while the puter thinks we are still at 22psi and keeps fueling. Then there's the no codes tune. Does this help?
PREMIUM SPONSOR
Joined: Feb 2009
Posts: 6,038
Likes: 73
The PCM won't cause a defuel situation but the SES light will still illuminate for 30 seconds.
Postmaster
Joined: Jan 2009
Posts: 2,544
Likes: 4
From: Suffolk, VA
Not necessarily. Even with the no codes tunes, I will instantly set the overboost code if I remove the OBA/OCR. I know DPs tunes will prevent defueling if the code is set, but it still throws the MIL light. If you aren't getting that code, then don't worry about it, but I do and it's just annoying so I keep the OBA on there.
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Elder User
Joined: Jun 2009
Posts: 999
Likes: 0
From: Easley, SC 29640
Let me take a whack. Call it a boost fooler for the PCM. As stated the PCM will defuel at some point above 22psi, usually about 24 PSI. A stock truck/turbo can make more boost than 24 when healthy, yet the PCM does not like to see this due to programming and longevity reasons so it will defuel to reduce boost to a desired level. This means the truck will make less power when you are trying to get the most out of it regardless of throttle pedal position.
Now the boost foolers don't let the PCM see anything above 22psi or so. So the PCM will continue to fuel up to full throttle based on pedal input demanded by the old right foot. This can allow folks with stock turbos to run with up to 30psi of boost in some cases.
This is how folks with aftermarket turbos can make 35-50 to even more boost while the puter thinks we are still at 22psi and keeps fueling. Then there's the no codes tune. Does this help?
Now the boost foolers don't let the PCM see anything above 22psi or so. So the PCM will continue to fuel up to full throttle based on pedal input demanded by the old right foot. This can allow folks with stock turbos to run with up to 30psi of boost in some cases.
This is how folks with aftermarket turbos can make 35-50 to even more boost while the puter thinks we are still at 22psi and keeps fueling. Then there's the no codes tune. Does this help?
believe it or not...yes, yes it does...i think i have a better understanding of this now...don't have the dough for the kit, but i may add it to my PMS list...
...thanks for the clarification...
PREMIUM SPONSOR
Joined: Feb 2009
Posts: 6,038
Likes: 73
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Is this based on research? I for one have an adjustable OBA and have never adjusted it, so that may not really be a required feature. I just know that I can if I need to. I guess I should have toyed with cranking it up until I set an SES but have never felt a need to. Just wondering.
Logistics Pro
Joined: Jul 2009
Posts: 3,635
Likes: 3
From: Lansdale, PA
Is this based on research? I for one have an adjustable OBA and have never adjusted it, so that may not really be a required feature. I just know that I can if I need to. I guess I should have toyed with cranking it up until I set an SES but have never felt a need to. Just wondering.
Whn I ordered the F6 from Jody I got the oba as well. On the 80e tune a full throttle for 30seconds it threw the ses light. All I did was tweak the **** 2 clicks and run it hard again. One more click and I haven't had any issues yet. My truck runs 34psi on the 120r tune, and loves every minute of it. Well...until it gets to about 1250* and I get scared of the consequences.
Posting Guru
Joined: Oct 2007
Posts: 2,225
Likes: 1
From: Farmington, Minnesota
Hope that helps.