Magna flow 12640 elminated 90% of drone
 

I installed the rv6 v3 j-pipe and the xlr8 quad resonated exhaust on my TL. Sounded nice on the outside, but the drone and rasp was very annoying. I tried putting the cones in the exhaust tips, that help a little but under load and between 2-3k it was still to much for me. So I ordered the magna flow 12640 resonator/muffler. Things a monster, I didn't even think it would fit. Friend of mine came over today and we removed the old resonator, and tig welded the new one in place. What a difference, still a slight drone (90% gone) but that was with the radio off. No rasp, and still have the nice deep note on the outside. Definitely recommend for anyone with an aftermarket catback.

Cool, thanks for the tip. I've been considering the XLR8 base cat back but already have the RV6 HFPC's and jpipe so I'm guessing the drone and rasp would be nasty. That's the only thing keeping me from getting it. Maybe with this resonator it wouldn't be so bad.

it works for me too..

Nice. Anyone got any vids?

I started out stock, then went with the resonated xlr8. Way to much drone. Carpoolers just bitched the whole ride, wife wanted me to park the car and used someone elses the first and only time she rode in it that way. So, I talked with mike at BillyBoat the builder of the xlr8 systems. He stated that the speed at which the exhaust is flowing slows due to the bigger less restrictive pipe. Basicly it needs back pressure to reduce the drone. He gave me some cones to stick in the tips to help increase the back pressure thus recuce the drone. He also said to try putting in a new J-pipe. I bought the RV6 j-pipe, no help.It added a little rasp. Then I installed the cones, that helped a little but not much. I then ordered the magnaflow 12640. A friend with a tig welder came over and we cut out the old worthless resonator, and installed the 12640. This fixed everything, every after market catback should be made with this pre installed. I even pulled the cones out of the tips. No rasp, no drone just a nice mellow deep note about as load as the road noise inside the car. Outside still has the nice deep note . If your not in your teens anymore, this is all you need. If your a teen enjoy your drone. Also, I have the tein lowering springs. So, I was worried about clearance. I found a tall speed bump and parked over it. I still have about 1.5" of clearance.

Sorry no vids, my phone doesn't pick up the sound very good. I'll try using one of my gopros. Just think about how much road noise you hear with the radio off, then replace that with a nice deep exhaust note.

Just a quick question. When did you purchase your XLR8 exhaust? Did you purchase it new or used?

I bought it used