I recently purchased the MBRP XP Series Side Exit Catback for my 2011 Sport 4x4. I purchased it through Autoanything.com due to shipping and price. I paid $300 for it shipped to my door and I did go with the Stainless Kit.

I had to make one cut of the factory exhaust to remove it. I used the directions and had the need exhaust on in about an hour. It would have taken less time if I did not try to remove the factory exhaust without making the cut.

This was performed in my driveway.

I like the clearance this exhaust gives and the looks. The sound is fairly good, kind of reminds me of Marty's Toyota in "Back to the Future."

I have had a nice 2.5mpg around town increase in gas mileage. I have yet to take it on a trip.

I will update with my continued thoughts on the exhaust.

 

I have their "single dump" kit and noticed a drop in a 1-2 mpg in the city. I was tempted to add a little to the pipe to help with the drone and maybe get the mpg back.

 

realllyyyyy.....




i want that exhaust, but not if i lose mpg!

 

We need some pics and vids!

 

Yea, there is no bends after the cat. Straight through design.

 

i take it thats a bad thing? if it is i had NO idea lol

 

No back pressure,.

 

Remember back pressure controls torque. There is a perfect spot for every engine set up. Not too much though.

On one of my cars, I removed the stock exhaust and built a straight through set up, it goes from a 2" collector to a 2.25" pipe... lost some bottom end and it's sluggish under 3000 rpm... but holy crap, step on it and you're hauling ***. I've had people ask me if it had a turbo because it'll go from 50 to 100 in about 2 seconds.

 

With the one I bought, that comes out the side, I noticed that I was not having to give it as much gas as before. Mine comes out right behind the rear passenger tire at a slant. This could be the reason for the difference. Also, are you resisting the temptation to floor it? The sound is a good one, maybe this could be your culprit.

 

What car?

 

Thanks. I have been wondering what people thought of the MBRP system from Autoanything.com - I will surely get this and replace my crappy flowmaster muffler