they cost 75 each where as flows were well over 100. they are getting louder everyday they have only been on about a month. they also got me close to 2mpg increase
just a note they are progressively getting louder and i went to mcdonalds drive through and was told to pull around they couldnt hear me over the car lol.
not bad at all the glass packs were so loud you couldnt talk over them. but the extremes are quit mellow. the faster the cruising speed the quieter it gets in the car. very pleasing imo