While a bigger turbo is the obvious need here, there is a such thing as going too big. When picking a turbocharger, it’s important to know exactly what your plans are and what you’ll be using the truck for. But at our previous 300hp level, smoke output and EGT’s could get pretty high, so upping to a larger injector, we knew we’d need more. The factory HX35W turbocharger is a decent little turbo and has been used for decades now on various Cummins engines from trucks to school buses and at factory power levels it works quite well. With the fueling side of things taken care of we needed to address the air side. In the diesel engine, all it needs to make power is fuel and air. Using brand new Bosch body injectors from Ducky Fuel, these weren’t required as cores and didn’t need to be returned. This truck has had a few owners before it’s current, so we were unsure whether or not the injectors we were replacing were the originals, but in the quest for more power while towing, it was time for them to go. Being new, there was no need to return our old injectors as cores and of course they included brand new copper sealing washers and new injector line seals. They did receive the needlework upgrade to maximize their potential and could possibly flow enough to push upwards of 500hp. As that nozzle size continues to increase, fuel entering the cylinder can be hard to clean up with air and make for a lot of uncontrollable smoke and EGT’s while towing. This 5x.014 nozzle size would offer around a 140hp increase over stock, but still be great for heavy towing when paired with the right turbocharger. With hopes of getting around 450 rear wheel horsepower, Chris Luttrell of Ducky Fuel Injection suggested one of his 5x.014 injectors built from brand new Bosch injector bodies. While it’s seen over 280,000 miles of road, the 5.9L Cummins under the hood of this 97’ truck still runs very healthy and after a few common repairs to seal some oil leaks and some modifications to the P7100 injection pump, with the injector swap it should be more than capable of producing 450- 500hp without issue. That fully loaded 6.7L Cummins Laramie is an impressive truck that tows like a dream, but when it comes to weekend work, a pair of muddy boots and dirty clothes leads to the old flatbed where there will always be a soft spot in a blue-collar guy’s heart. Take this old flatbed for example, while the owner has a 2019 Ram Mega Cab sitting in the garage more than capable of doing everything he’d ever want from a truck, he still finds need for this 280,000 mile 12-valve Cummins on a weekly basis. With that said, it seems more and more guys are willing to put up with a little steering wheel slop, a CD player that hasn’t worked for ten years, and a little engine noise from a pre-high pressure fuel injected diesel. While anyone can appreciate all the amenities found in today’s $70,000 trucks, not everyone will appreciate that monthly payment. There’s no denying just how impressive today’s new trucks are, they’re comfortable to drive, they’re quiet and they make ridiculous power for ‘off the showroom floor’ vehicles.
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