Yessir, $200 american
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RAM RHO HO Downpipes with High Flow Cats +100hp!
- Thread starter PinnacleBuilt
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What’s the price?
Chris
PSP FAT CAT. RHO HIGH OUTPUT CATTED DOWN PIPES
PSP FAT CAT. For the discerning enthusiast who demands the best in performance and craftsmanship. The absolute finest high output 49 state EPA compliant down pipes available for the RAM RHO. Featur…
pinnaclespecialtyperformance.com
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Before I forget, did you happen to get any dyno runs for sound?
Did you get any logs with wgdc or fuel trims? Anything funky looking?
Results dont lie, curious about how loud this would be with an awe exhaust though
Seems these are best paired with the JB4, they will give you the low end bump, while the tuner provides the top end hit. 
WGDC is going to be lower. Anytime you remove restrictions it comes down as the turbos aren’t working as hard to hit target boost.
I’m not seeing anything funky.
AFR’s are right where they were before and of course no CEL.
Sound is subjective but I would say “loud-ish” paired with the awe.
It’s +6-9db’s on the factory exhaust so it stands to reason you’d see a similar increase.
For the WGDC, i was just curious if due to the lower restriction you were seeing big wgdc corrections and boost that was overshooting and undershooting until smoothing out. I'm sure the computer will learn and store these corrections overtime, but just my curiosity getting the best of me.
Any chance you have a boost curve logged/graphed?
It needs to stop raining here so i can go do more pulls but I do have baseline datalog graphs to compare the boost curve to.
I’ll put some overlays together like the below but include the lower rpm range.
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I think I sawSeems these are best paired with the JB4, they will give you the low end bump, while the tuner provides the top end hit.
On the FB post over 100 ft lbs torque gain with the under and down pipes. Maybe it was more?
I'm going to put together some datalog graphs and overlay against the bottom end of my pre-dp logs below.
But you can see the torque curves follows the boost curve pretty closely.
cat6 vs oe no down pipes
cat6 vs oe no down pipes
These dynos look great. Close to Stock TRX numbers.
Are you looking for improvements or just times?
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I wanted to compare times from what others have posted with stock trucks and trucks with tuners on them and see if the added torque from these cats get this thing moving quicker off the line.
DA > everything
I’m at 4500ff and DA is usually 6k and i’m running 36” mickeys on KMC’s at 110lb’s per…
So no, that isn't a good comparison.
For reference, already 4 tenths slower pre dp’s than other folks have posted.
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I think this is probably the single best bang for the buck power upgrade. Yes power upgrade not done for sound. And yes I know the piggy backs are cheaper. To me this brings the power on much sooner. Like TRX sooner. In the low end as much as 700 RPM sooner.
downpipes still going strong? any idea on the release date? I'd be all over these; my biggest fear is how loud the truck will be with a full catback
plugging away getting material for the production run.
I understand the concern about it being loud. I'm actually going to install some stainless bros resonators this weekend to see what type of reduction it makes to address those concerns and to have a recommendation for folks who want to tame it down.
Current assumption is 4-5db reduction which will bring it pretty close to stock.
Looking at the AWE there is room to add said resonators as pictured below.
615-07636-0111-3" SS304 Inlet/Outlet Bullet Resonator 4
www.stainlessbros.com
Are you adding the resonators to a stock system with the down pipes?plugging away getting material for the production run.
I understand the concern about it being loud. I'm actually going to install some stainless bros resonators this weekend to see what type of reduction it makes to address those concerns and to have a recommendation for folks who want to tame it down.
Current assumption is 4-5db reduction which will bring it pretty close to stock.
Looking at the AWE there is room to add said resonators as pictured below.
View attachment 20120
615-07636-0111-3" SS304 Inlet/Outlet Bullet Resonator 4
www.stainlessbros.com
