Reviewed By Peter B (Owego, NY) Reviewed for a 2012 GMC Sierra —3/2/2016 4:14 AM
I've been running the Volant CAI system in my 2012 GMC Sierra 5.3 since about 20,ooo miles and just replaced it @ 125,000 miles. I haven't noticed much change in power or gas mileage. But, my truck runs great, doesn't use a drop of oil between changes and I am confident that it is breathing clean air. And for that piece of mind it's worth the investment. note that I only use synthetic oil and change regularly by the truck's system indicator (clock).