Hey everyone I have a 2004 silverad0 2500HD with the 6.0 k&N intake, Hypertech programer, and exhaust. When i drive it down the road and floor it, it takes off like no other but when it gets around 4,000 rpm's it seems to get stuck there for a second, like its not getting enough fuel or something. I have the programer set on 93 i always put 93 in it and i also use the lucas fuel injector cleaner. Any help would be great.

 

I want to get the MSD ignition, but im not sure if that will fix the problem.