I did the borla ATAK crate muffler. Removed the flapper but left the resonators. It sounds incredible. No drone and all smiles
I know exactly where you are coming from. I did the same thing with my 5.3 and 6.2 trail bosses I had in the past. The muffler only swaps sounded great, but the drone was horrendous! I thought by leaving the factory resonators in on the 6.2 would reduce it, but they didn't do a thing. It was so bad I went our and bought the borla touring cat back for the 6.2. It totally eliminated the drone and sounded good, but still too tame for my liking. When I bought my ZR2 I ordered the Borla S-type and I must say it is perfect. Absolutely zero drone, and a really nice growel to the exhaust note. Never once have I got a complaint from my wife or my 3 kids on it being to loud or annoying. It has a loud cold start for sure, but after 30 seconds it calms right down. It's well worth the extra $ compared to the muffler swap. That drone is enough to make you never even want to drive your truck! It's really that bad.
I started with a super 10 on my 5.3. It was miserable at highway speeds. I then bought a pulsar lt thinking that i could adjust the throttle and keep it out of the rpm drone range and disable DFM, no luck. I then switched to the flowfx and it was much better but still too much drone.
Thats the one. I even removed the resonator behind the muffler to make it a little louder. Just bought a 3.5 in section of stainless tubing and replaced it. Still no drone!
my borla touring system is spot on. imo perfect step up from dull anemic stock setup.
I removed the muffler and the flap, just left the resonators and I love it. It’s awesome in town and on the highway it’s not bad if you stay at a steady speed. If you’re having to speed up and slow down between 65-75 it will drone a little but not obnoxious. If I had to go back I would do the exact same thing. Just my two cents.
Has anyone tried the delete with the AFM disabled?
No one makes a device yet for the refreshed trucks to disable the DFM. There is a good thread about it. Many of us are waiting for something like a Pulsar in order to do this delete. AFM was in the older trucks.
I meant to say DFM. Doesn’t the L9 hack keep it from going into 4cyl mode?
Yes. I also use tow haul mode a lot too. I thought you meant to get rid of that crap permanently. I would love to!!
I’ve deleted and had new corner exit tailpipes installed and I swear the drone is nearly gone in L9
i thought even you lose DFM we still have faulty lifters. until they change the defective design of the lifter, its hit or miss.
That's correct. I was hoping my truck would come without that chip! But no luck.
Replaced the muffler with a crate Borla ATAK, deleted the flapper, and left the stock resonators. In L9 at highway speeds, there is a serious drone around 1500 RPM. Very annoying especially for anyone in the back seat, and conversation between the front and rear is a challenge. I love the sound, but the drone is an issue on highway excursions. I am currently searching for a solution to the drone.
