Is it possible to put a cat back exhaust on a 2011 hemi with the mds system from the H pipe back? If so will it bother the mds or warranty? and does it hurt mileage? And what would it sound like if i did it and the mds kicks on ive heard it sounds bad? Thanks guys!

 

These trucks do not have an H pipe. But you can add a catback and have no problems with the mds system. Go to youtube and do some searching....there are quite a few videos over there of different cutbacks on these trucks.

 

thanks! ive only read a lil bit about these trucks and just picked it up monday but what ive read about ive seen people getting check engine lights and it sounding bad so i was curious

 

no CEL but I think in MDS mode it sounds like $hit with anything but the stock muffler. But I can only compare it with stock and a 14" magnaflow. Kinda like a diesel using a jake brake..

 

Sounds kinda like a Jake brake on a semi when it is on. Sounds pretty crappy around town. Not so bad on the highway. You can always either drive in tow/haul mode around town, which will disable the MDS or get a tuner like the Predator or SC and turn it off.

 

Thanks guys im a diesel freak and dont rly know much about gassers especially with these newer trucks with a ton of stupid sensors id like to keep my warranty if possible but do what I can to grab a few more mpg but the exhaust is just to keep my ears happy haha

 

The exhaust won't void any warranty except on the exhaust parts that you remove. It's the law unless a part fails as a direct result of the installed part. Example, your new cat-back were to melt a brake hose or something that it was touching.

 

Don't expect any mileage increase either. When in MDS the tone dosen't bother me one bit. I have a Magnaflow 21inch ? no reasonators.

 

i dont expect a increase in mileage i just love to hear my truck and today i was bored and unclamped the muffler and resonator will it bother it at all till the new exhaust is on? i was told maybe it would burn up the cats? i dont know but it smelled pretty bad when i ran it at first but i love the sound!!!