212004 H&S Motorsports 2007-2009 Cummins 6.7L SX-E Turbo Kit

Kit Includes: 

• HSM SX-E Turbocharger
• SX-E 90-degree Compressor Outlet Elbow & Clamp
• HSM Divided T4 Cast Exhaust Manifold
• HSM Downpipe
• HSM Charge Pipe
• HSM Polished Intake
• AFE Air Filter
• Installation Kit Including all necessary hoses, clamps, plugs, gaskets, adapters, etc.

The factory VGT turbo that comes on the 6.7L Cummins engine is a very restrictive design. It is capable of producing more compressed air than it can release through the turbine housing. This results in drive pressure and high EGT's (exhaust gas temperatures) Both of these can cause serious engine failure or at the very least a failed head gasket, which we see a LOT here at our shop. We see more 6.7 Cummins head gasket failures than we do 6.0L head gasket issues, that's a problem.

Years ago when we started seeing this issue we tried fixing it the same way we fixed head gasket issues on a 5.9L Cummins, deck the head, throw in a fresh gasket and add ARP head studs. After the first few trucks we did kept coming back we decided to try the ARP custom age 625 head studs as they have a higher torque down. They were still coming back with head gasket failures. This was when we went back to the drawing board and started looking at the science of this new Cummins engine. 

We installed a drive pressure gauge at the exhaust manifold and a mechanical boost pressure gauge at the intake manifold. We put our test truck through a series of different road tests, which included some heavy towing up some very serious grades. We recorded a worst case scenario of 3:1 drive pressure to boost ratio. That means when we were measuring 20PSI at the intake manifold, we were seeing 60PSI at the exhaust manifold. The turbo is the issue, to properly FIX the 6.7L Cummins head gasket issues, you have to install a different turbo. 

Now some customers don't like this option as they are madly in love with the factory exhaust brake (the main cause of the drive pressure issue) well we have options for you people, much better options than a faulty factory design that only works sub par. We have a variety of aftermarket exhaust brakes that work ten times better than the wimpy factrory exhaust brake. Click the link and call if you have any questions about these exhaust brakes. 

We have performed extensive testing of BorgWarner's new SX-E line of turbochargers and they have proven to be a great match for the 6.7L Cummins engine. All SX-E turbo options include the .91 A/R divided (twin scroll) turbine housing and our true divided exhaust manifold takes full advantage of the twin-scroll design. The 73mm turbine wheel is larger than we are used to using, but the twin scroll design helps to retain the response and drive-ability in the lower RPM range. The benefits of the 73mm turbine wheel include lower drive pressure, lower EGTs, and more power! During our testing we experienced an average of a 200 degree drop in peak exhaust gas temperatures when compared to the factory VGT. Durability and reliability also play a big part in our parts selection and BorgWarner has stepped up their game with the 360-degree thrust bearing assembly that is featured in all SX-E turbochargers.

You may be aware that BorgWarner's new SX-E compressor housings are not currently offered with a 90-degree outlet option. No problem! As a solution, we CNC machine each SX-E compressor housing in-house to take advantage of the v-band outlet and supply a cast aluminum 90-degree elbow with v-band clamp. We felt that an aluminum elbow was necessary for this application since air temperatures are going to be the hottest right at the compressor discharge and a silicone boot would not be as reliable.

Turbocharger Options

We offer several different compressor wheel options with this kit: 
- 63mm Forged-Milled Compressor Wheel (575-625 WHP) 
- 64mm Forged-Milled Compressor Wheel (600-650 WHP) 
- 66mm Forged-Milled Compressor Wheel (650-700 WHP) 
- 69mm Forged-Milled Compressor Wheel (700-750 WHP) 
(All of the above options include the 73mm turbine wheel and .91 A/R divided turbine housing.)

Without any fueling or tuning changes, you can expect to pick up at least 60-100 WHP (depending on which SX-E option is used). With complimenting fuel modifications, these turbochargers have been known to put down some serious power!

*** Since this kit includes a brand new BorgWarner unit, turbocharger warranties will need to be done directly through BorgWarner. ***

Aftermarket ECM calibration may be required.  You are responsible for verifying compatibility with your provider. 

This product is not legal for sale or use in California.