I have a flowMaster 40 series and I don't like it. it reverberates when your on the gas pedal above 3000 rpm....kind of annoying, I think. when it's not reverberating it souns pretty good. Nice low tone. I've considered going to a 50 series delta flow. Suposedly they don;t reverb.

Also....you guys not running cats.....your motors are not running correctly either. the cat is an intregral part of setting the mixture correctly.

'93 4Runner - 3.4L 5VZ-FE, 2" body lift, on-board-air system, custom gauge cluster, rear e-locker, electric fan, custom built front and rear bumpers, sliders, 4,88 gears...all on 33x12.5's.