Spectre air filters are crap. They will rust and the rubber will dry rot. If you buy one of these get K&N. It’s engineered to fit your vehicle correctly. This truck makes 355 hp stock. This version intake “claimed” adds 17.3 per K&N. This is the cheapest mod $per horsepower gained to add to most vehicles. I use their intakes and filters. Noticeable gains with the intakes. Usually 1-2mpg. With gas around 4$ a gallon intakes pay for themselves in a few years. 12k miles a year at 19mpg 631.57Gal x $4 = $2,526.28. 12k at 20mpg 600Gal x $4 = $2400.00. $126.28 saved per year on 12k miles. 1mpg adds up. Nice review and nice truck. Most people don’t notice the savings because it just sounds good at 2500-3000 rpm takeoff to put your foot down to hear the motor lol. Any horsepower you can add without increasing added fuel is money saved over time.
I have a Volant CAI in mine, and noticed a little better gas mileage, but a marked difference in throttle response... but NO hp gains(which is normal), and obviously better sound
All I did to my new 2021 GMC Sierra AT4 (6.2L) is buy a $40 K&N drop in filter for a little better airflow. It does "breathe" better at higher RPMs. Not much sound difference, no "check engine" lights, and didn't spend $400+. Without a tune, (I have owned tuned trucks) having a cold air induction/exhaust does help (a little). But, without a tune, most trucks aren't going to see a big noticeable horsepower/torque increase. Either way, these mods will change the sound of a truck...which most people like (including me). We didn't buy a truck to sound like a Camry (quiet, with no engine noise). But, if one is going for power...you have to crack into the computer with those type of mods
Any real tuning would be done after the warranty expires, if I still have the truck. I’ve been trying to get a Pulsar LT which is an inline “tuner”; it does speedometer calibration, DFM disabling, and throttle sensitivity.
