2015 Silverado BIG torque improvement

Ottawa, Ontario. GMC trucks ship from the factory with underwhelming performance. A custom Dyno Tune at internationald... really wakes these trucks up in the low-mid torque range - right where trucks need it the most.

[@stephenhodge6441]

I'm sorry am I missing something, so you're saying with just tuning, this guy gained a 148 lb-ft down low?

[@internationaldynoauthority693]

Yes, that's correct. The original tune that comes on the 5.3 is designed to make the truck salable. And pass emissions only. The fueling, is absolutely atrocious. Timing is atrocious. The transmission tune is atrocious. We go through each one of those sections and make them correct.