I have a 1995 Tahoe all factory, except for K7N, four rivers front/rear shafts, B&M towing shift kit & MagnaFlow exhaust.I'm fixin to swap my Magna Flow for the factory setup. I figure better mileage maybe even better performance. Bad gas mileage, and even worse acceleration. Will swapping back to factory exhaust, and losing the K&Nhelp my problems? HELP Swapping tomorrow need to know ASAP!!!!!

 

Can't swap due to three inch exhaust front to back, factory is 2 inch.