Was wanting to know if any of you guys out there who have went with a larger throttle body like 85mm and up really think its worth it? Like is there a big difference in throttle response over stock?

 

on my 06 I had the 3865sc tuner,k&n drop in,custom made 4" intake,power wire,sonnax line booster,stock logs and cats,new 3" to the 18" maggy si/do muffler. I went with the 87mm for im doing more mods later--- I gained 1/2 mpg just with the tb alone 80mm to 87mm big diff

 

To the OP...I'm assuming you have the 5.7? Regardless anything bigger than stick will yield better throttle response, but don't expect high HP #s. It is like most a supporting mod.