mss114x44

have'nt been here in a while. Well it turns out the sound was torque management. the massive timming pull during shifts causes the sound. once i had torque management removed it went away. Now the truck shifts really nice too. hope the transmision holds up. 40,000 miles & no problems.

Ok stg313, i gues that narrows it down to my stock muffler. I'm guessing it can't handle the mass air flow from the headers & when it shifts the let off is creating a back flow through the baffles in the muffler or something. I need to change out the muffler anyway to get best flow, i just didn't want the exhaust to be real loud. Hey what a difference a air intake, headers and a tune make huh!

I'm having a odd sound after my headers were installed on my 2011 Silverado 6.2 I have AR headers with high flow cats mated to my stock exhaust, now when i accelerate hard i hear a loud air swish sound (like a air bleed off valve) for a second right at the time the gears shift. We checked, I have no leaks in the system. Is it the stock muffler or maybe something to do with the trans. torque managment, wierd & annoying. Have any of you put hearder on your 2011 6.2 trucks and have this problem?

All being equal, which 2011 Silverado 6.2L wins the 1/4 mile, one with 3.42 or 3.73 rear gears 6L80 Trans?