Originally Posted by
dinasrt
.... and also look forward to hearing about "no drone", resonance issues. You can't claim a system doesn't drone until it's completed and tested. R.P.M. range approx. 1,800-2,500 is the tough range for manufacturers to eliminate the bad frequency. I read that the Borla uses noise cancelling design better than most, so hopefully all works out well.
dinasrt, the Borla model that works is the Pro XS which once carried the Turbo name which they dropped. I and several friends have used these mufflers on many vehicles with 4 cylinders to the dreaded V8's! Trivia: Turbo mufflers started out on the Chevy Corvair Turbo model, 1969 being the pinnacle year and a rare car.