Quote:
Originally Posted by GoldBowtie
My situation is a little different -- I have an L99 with Kooks headers and high flow cats (and AFM tuned out) with SLP Loudmouth II axle back. I left the "big resonator" in place and had the perfect sound for me. No drone, very comfortable at highway speed.
Then the resonator developed a rattle (interior baffle loose), and I replaced it with a straight x-pipe. Now the sound is still good (a little louder) except at 1900-2000 rpm at highway speed -- now there is some drone! It may be acceptable but definitely not as good as when the big resonator was on.
The resonator is a straight-through design. You can look straight through it through either hole, and I'm told it does not restrict exhaust flow. (I wonder if the Magnaflow resonated x-pipe would have been a better choice than my x-pipe???)
My Advice: Regardless of what axle back or header system you have on an L99, leave the big resonator in place.
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With his Solo axleback he shouldn't have to worry about drone to much. On you're set up the resonated X-pipe would make sense.