photos by: the author
Getting a Full-Sized GM Truck to Breathe has Never Been Easier
After the LT-Series engines had replaced the LS just a few years ago, the aftermarket had to completely undergo a severe update to accommodate the owners with these vehicles. Everything from induction and exhaust systems, engine components and especially ECU calibrations all had to go back to the drawing board, as very little would be able to carry over from the previous platforms. Throw in the fact that the LT1 and its GEN-V variants coincided with new vehicle launches, and it was clear to see that we’ve entered a new era in performance.
The 2014+ Chevy Silverado and GMC Sierra were among the new vehicles launched with the LT1-based, 6.2L EcoTec3 L86 that picked up where the LS-based L92 had left off in the previous generation. Packing 420 hp and 460-lb ft at the flywheel, most consider this enough power to tow the boat to the lake, drop the kids off to school and make the morning commute. However, if you’re reading this publication you’re probably not like “most people,” and are more than likely looking for ways to squeeze more power out of your L86-equipped Silverado or Sierra.
That’s just the case with the owner of this particular 2015 GMC Sierra Denali. Owned by FJ Performance friend and customer, Justin Schmidt, the Sierra was a completely unmolested example that Justin picked up fairly recently to use for the daily grind and to haul his 4th-gen Camaro race car to and from the dragstrip.
Not wanting to tear too much into it, in attempt to protect his factory warranty, Justin was still interested in simple bolt-ons — that will keep him warranty safe and emissions legal in his home state of Pennsylvania. Besides, since when is a few more ponies and an improved soundtrack a bad thing? Looking to help Justin out, we suggested going with the newly-released cold-air induction kit from our friends over at Cold Air inductions. Citing Part #512-0103-B, the kit is a complete system that includes everything you need; from the airbox to the adjustable clamp securing the intake tube to the throttle body, and everything in between.
Helping us install the CAI kit, was our friends at FJ Performance — Francis Johns and Matt Neubaur — who operate one of the fastest-growing, late-model GM tuning shops in Western Pennsylvania. Having made a name for themselves in LS and Ecotec engines, it seemed only natural that we team up with them and their in-house, in-ground Dynojet dyno for installation. Besides, someone had to use the camera!
Rick Seitz is the owner and founder of GMEFI Magazine, and has a true love and passion for all vehicles. When he isn’t tuning, testing, or competing with the brand’s current crop of project vehicles, he’s busy tinkering and planning the next modifications for his own cars.