nice pickup, marlon! never imagined seeing you in a sol after seeing the evo in person this summer. anyways, i dont know about the validity coming from the manufacturers, but i do know that most companies that sell exhaust and mufflers claim improved gas mileage. sorry i cant tell you something more concrete, but TTT!

if you wanna talk to the guys who know sols inside and out, head to http://www.automotivetech.org/at/ or if you just have random questions shoot me a pm.

welcome to the family, man.