Exhaust Upgrade...

[Wolf539]

Originally Posted by tonggi

That's great but I don't see an X5. You are comparing apples to oranges. Every car is different. I'd like to see real world numbers from an X5. Cause I can show you dyno graphs of an E46 showing 359 whp with an exhaust and tune but that means absolutely nothing in regards to an X5 muffler.

I actually work for a living, so I'm not going to spend any more time trying to research something for you. But don't twist the facts; the M3 was an exhaust, no "tune". For all you know, the HP gains made on my 4.4i may be similar, or more. You're offering absolutely nothing but hot air to support your position. Until YOU come up with a dyno that shows a 4.4i X5 making zero gains with an Eisenmann race exhaust I think we're wasting our time.