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Doing the following will help:

Different exhaust(get rid of that water heater sized restrictive muffler)
K&N filter and less restrictive tube
Computer tune (Diablo, Hypertech, custom)

Those throttle body spacers pretty much do zero, there is no evidence to back up the claim that they increase HP and torque.
 
I did headers, exhaust (no muffler but I kept the H pipe), spectre intake, cam swap and springs (not installed yet) throttle body spacer, custom tune from diablo and maybe eventually I'll do a dyno tune, 373 gearing and smaller, lighter rims and low pro tires. Once the cam is in and the tune is perfected I will, without a doubt, smoke an SS. The next mod would be built heads that are port matched to the engine. This truck is getting very impressive and sounds AMAZING! I can't wait for the cam to go on it.
 
Im trying to figure out wht i should do to my truck.. i was planning to buy subs but id rather make it faster but not go too high in price. I'm planning on getting a K&N cold air intake but dont know what else or type of stuff
I have a 2015 5.3 and it was very sleepy when I first bought it. I’ve put k&n filter, flow master super 10 dumped with turndowns under the bed in front of the rear axel, super chips flash paq runner and just with those mods it has really woke up.
 
21 - 29 of 29 Posts