Long story short, I pulled off my Flowmaster Force II axle backs and stock cat-pipe, and installed a Lethal o/r H with stock mufflers.
It threw a check engine light (I knew it would), and decided to throw the stock cat-pipe on with the stock axle backs for now.
Here's my question: Everyone swears the stock mufflers flow great, and there's no power advantage to any aftermarket axle back. However, I can tell a difference going from the Flow's to the stock mufflers. Does anyone have any hard evidence (ie; dyno sheet) proving their theory either that axle backs do/don't flow better?
I searched, but again, all theories or marketing, and little evidence. Thanks
It threw a check engine light (I knew it would), and decided to throw the stock cat-pipe on with the stock axle backs for now.
Here's my question: Everyone swears the stock mufflers flow great, and there's no power advantage to any aftermarket axle back. However, I can tell a difference going from the Flow's to the stock mufflers. Does anyone have any hard evidence (ie; dyno sheet) proving their theory either that axle backs do/don't flow better?
I searched, but again, all theories or marketing, and little evidence. Thanks