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Water Meth Inj Kits
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Diamond Eye Performance
Thoroughbred Sku #: HSM1115GMDUALHIGHPRESSFUELKIT
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The H&S Motorsports dual high pressure fuel kit is the ultimate in high
pressure fuel supply. With over a year in development and testing H&S Motorsports
has pushed this kit to the extreme and it still performs in even the most demanding
H&S Motorsports is pleased to introduce the Dual High Pressure Fuel Kit
for the 2011-2014 6.6L GM Duramax. This kit has been in development since June
2012 and is finally available to the public after over 11 months of testing
and refinement. The diesel industry has been longing for this modification ever
since the release of the LML/LGH platform and now the wait is over.
Our friends over at H&S Performance have been testing this kit on their
2011 Denali HD for over 6 months. This is the same truck that made 1086 horsepower
and 1911 ft/lb of torque on a Mustang 1100SE dyno during the "Breaking
Point 2" live feed in which they intentionally set out to find the limits
(or breaking point) of the factory LML bottom end. Prior to the "Breaking
Point 2" event, the truck was driven regularly by not only the engineers
at H&S Performance, but also the members of the race team. Needless to say,
they were (and still are) impressed with the ability of the kit to maintain
rail pressure, even in the most demanding conditions.
Just as a quick reference for you diesel nuts out there, the engineers at H&S
Performance were able to run 3800us (not recommended) of main injection duration
on stock injectors without a drop in rail pressure. So what does that mean?
Well, think about it this way; their off-the-shelf HOT tune commands around
1400us and is on the verge of draining the rail on a stock CP4-equipped truck.
At 3800us, that is a 270% increase in fuel demand from their HOT tune and limit
of the stock CP4. The H&S Motorsports Dual High Pressure Fuel Kit was able
to maintain the commanded 29,000 PSI rail pressure without skipping a beat.
If you are looking for the ultimate in high pressure fuel supply, look no further
than the H&S Motorsports Dual High Pressure Fuel system.
So what's wrong with the factory CP4 fuel system?
Nothing is necessarily WRONG with it, but the factory CP4 fuel pump by itself
is only capable of providing enough fuel to safely produce around a maximum
of 480-500 horsepower. Once your power goals exceed that 480-500 HP range, more
fuel is an absolute requirement. Assuming your factory CP4 pump is in good condition,
this kit is easily capable of producing 900+ HP worth of high pressure fuel
Will the CP3 pump ever wear out or deteriorate over time?
The CP3 pump we include with the kit is a brand new OEM unit from Bosch. That's
right, BRAND NEW, not a remanufactured unit like many shops include. The key
to ensuring the longevity of any high pressure fuel pump is by providing the
high pressure fuel system with clean, waterless diesel fuel. Any fuel contamination
that reaches the high pressure fuel system can be detrimental to reliability
and performance. We highly recommend using AirDog or similar lift pump for proper
filtration and water-separation.
Why do we use a CP3 in instead of a CP4?
There are a few reasons we chose the CP3 over the CP4:
The CP3 pump has been proven to be reliable. This pump technology has been
used on the Cummins and Duramax platform for years.
While the CP4 has the capability of delivering higher pressures, it lacks the
volume of the CP3. With both pumps installed, you get the best of both worlds
- high pressure and high volume.
Price. With the CP4 being a newer pump, it is obviously more expensive. By saving
on the pumps included with the kit, we can pass that savings directly on to
If your fueling demands exceed what the stock CP3 and CP4 are capable of providing,
one of our 6.7L Cummins 10MM Stroker pumps can easily be used as a replacement
while still being able to re-use all fittings and lines included with the kit.
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