HI Guys,

I Just got a new 05 KR 2 months ago and I'm ready to start with the mods.

I just ordered a Magnaflow 16614 SI/DO catback setup and I will be pulling a tent trailer from time to time and I'm wordering if this will be a problem with rear exit exaust? I'm mainly worndering if the fumes will make the trailer smell or any thing else that may apply.

Could someone with experiance weigh in please?

 

I read a towing article that did not recommend rear exit or dual rear exit exhausts due to the fumes being absorbed into the towed vehicles ventilation system. If you are towing an enclosed trailer I don't think it would be a problem. I tow a vehicle that my wife drives with my 7month old son and I don't want to take that chance.Here is some info that i got from two muffler manufacturers.


For the enthusiast who wants an awesome look and aggressive powerful sound this split rear bolt-on cat-back exhaust is for you. Gibson’s exhaust systems decrease backpressure, allowing the engine to produce more torque, increase horsepower. Typical gains average of 15-20 horsepower. On some vehicles the spare tire may need to be relocated or removed. Works with most bumpers, roll pan and trailer hitches. Not recommended for towing, because carbon monoxide may be drawn into the interior rear of a vehicle when an exhaust pipe directly exits to the rear of the vehicle. Exhaust can be louder under towing conditions.

Split-rear exit exhaust systems are not recommended for drivers who frequently tow or have a shell over their truck bed. For these drivers, we suggest a split-side exit exhaust system instead.

 

The "shell"statement is a false claim from all of my research. At cruising speeds, side or rear, the exhaust and anything else airborne is instantly "swirled" and tends to lift. Add this the rest ot the air turbulence and any turbulence from a trailer and the exhaust is a moot point.

This is just my two cents and what I have found... Have a good one.

 

I pull a box trailer with my 05 5.4 3V. I was worried if I ran the exhaust straight back that the exhaust tone would echo off the trailer and bother me at cruising speeds. Since I preferred the look of the stright back exhaust I went for it and have no regrets. My biggest problem with side exits behind the wheels it they pick up too much stuff off the rear wheels.

My Gallery

https://www.f150online.com/galleries....cfm?gnum=6311

 

Hey lightning bolt, not to argue with you; this is the website I got the info from.

http://www.autoanything.com/products...dual_rear_exit

I; by no means am a " tow king" and stated that the following information was what I had read, and the article that you took from my reply was NOT what I had said but a copy and paste of the above link for his review and info. Thanks

 

Actually the flat back of a truck with a cap on it forms a low pressure area behind it and can trap exhaust gases in the cap if seals are poor. I would not worry about it though unless you keep dogs back there. Same effect as drafting behind a big rig. The vacuum sucks you along. Nascar anyone?

Rear exit with diesel towing rigs and you could end up with soot stains on the front of your trailer.

 

When your going 70 mph down the road, unless your running tall stacks, the exhaust is going to the rear no mater where the exit is. The effects of the exhaust mixed w/the volume of air produced @ 70 mph, would be negligeable, IMO. I've pulled horse & travel trailers for years w/no problem.

 

I want to get a flowmaster dual rear exit exhaust system on my truck to replace the stock stuff... I have a cap on the back- it has screened windows that i can open, and a sliding front window that goes to the cab (there's a gap of course) to get air moving through there.

every once in a while my parents have me take our dogs to the vet, etc... so it's not a big frequent thing but i obviously wouldn't want to suffocate them.

would there be enough fresh air flowing through the bed to give them air? or would the draft that sends the fumes into the bed outweigh the draft coming from the windows?