Hi, I just put a throttle body spacer on my 2019 LT TB (5.3L) with an S&B Cold Air Intake, and I figured I'd let you guys know what it did since it's a very easy and cheap mod. Haven't seen anyone else post about them.
After installing, it feels like the throttle response is a lot better, and that RPMs climb much faster. Throttle response feels like what sport mode was before the spacer, and on sport it feels even better. I haven't noticed any sound change because the S&B is already pretty loud as is. Link : https://www.americantrucks.com/proven-ground-silverado1500-throttle-body-spacer-s115556.html
That being said, has anyone here gotten a throttle response controller for their T1? I've seen mixed things about it being amazing and the truck feels better, but some say it's useless if your truck has sport mode. Been looking at this one https://www.americantrucks.com/speedform-silverado1500-throttle-controller-s122652.html#customer_q_and_a since the pedal commander is 170$ more for what seems to only be bluetooth functionality. I'd like to hear your guy's thoughts.