Exhaust question: reposting in a more simplified/direct way

I had a 14" Magnaflow installed. They were afraid I wouldn't hear the 18"...

So to quiet it down they installed a 12" glasspack, with the scoops set to be more restrictive/most quiet. I like how much it quieted down, and it usually stays low because I try to shift by 2.5k.

I'm not concerned with power numbers, I'm just the kind of person that feels the more subtle changes in things. My feeling is that the glasspack makes the throttle feel more 'stuffy', less responsive, compared to how it was feeling after swapping out the stock exhaust.

Does that make sense or is this just in my head? I'm considering getting a longer, straight-through glasspack and an 18" muffler to have less sound but be more free flowing. Or will that just be a waste of money for no perceivable difference in throttle response?

 

18" straight through, is my opinion. Mainly because I a running one. Lol.

 

I hadn't thought of it that way, that's an interesting thought. If it hadn't felt how open it was before the glasspack I might be inclined to agree.

I spoke to the head guy at the shop this morning and he sounded surprised that adding a glasspack was suggested to quiet it down when the first muffler was too loud. He named another brand that is supposed to be the best combination of free flowing and lowest sound. I'm going in later today so we'll see what they suggest next.

 

I think you may have had it right after all. The shop replaced the Magnaflow with a Dynomax Super Turbo and left the glasspack in. The sound is now a quieter, lower tone, right about where I want it. And the truck feels much better now overall. Taking off from a stop feels much smoother and I don't have to give it extra gas to keep it from stalling. Would that have been caused by the initial lack of back pressure due to too much free flow?

 

No worries, I'll dive into that on my own time. Identifying the problem correctly will set me on the right path. Thanks for sharing your knowledge!