side or rear exhaust
Originally posted by MROLDV8
I agree with you guys about the exhaust comming in from an open rear hatch or window, but here's a question for you...What happens if you are unfortunate enough (and definately a person with questionable taste) to own a Shovie Avalanche? With that midgate opened-up, wouldn't the gasses find their way into the cab?...along with dust and water? Or did GM magically find a way around this problem?
I agree with you guys about the exhaust comming in from an open rear hatch or window, but here's a question for you...What happens if you are unfortunate enough (and definately a person with questionable taste) to own a Shovie Avalanche? With that midgate opened-up, wouldn't the gasses find their way into the cab?...along with dust and water? Or did GM magically find a way around this problem?
As far as the rear slider windows, I don't think you'd have to worry too much about them if your exhaust was out the rear. The tailgate would keep most of it back there anyway.
Although, someone mentioned that he had his exhaust dumped before the rear axle, and he said he could smell exhaust when his slider was open. This was because it's being drawn up from in between the cab and the bed from under the truck.
Originally posted by jdf150
Wow you are talking about passing laws to keep people from having exhaust straight out the back but so defensive when someone proves you don't know what you are talking about.
Maybe we should pass a law to keep you from hurting yourself!
You might want to get a few brain cells before you open your trap!
Wow you are talking about passing laws to keep people from having exhaust straight out the back but so defensive when someone proves you don't know what you are talking about.
Maybe we should pass a law to keep you from hurting yourself!
You might want to get a few brain cells before you open your trap!

RMcool - beautiful truck man

Wait - Oh my god - how the hell could you give up a GT for a truck?! Maybe Im missing something
Still a sexy truck tho
Last edited by GooberPHX420; Jul 30, 2002 at 05:20 AM.
Originally posted by GooberPHX420
Mmmmmmmkay there jackass, check the facts before you go insulting people. Ever ridden in a bronco? or any vehicle with large rear windows? I have Sideswept exhaust on my bronco, and I STILL get fumes in the back. Surely its 10 times worse with rear outlet exhaust. And as many have said, it is far less noticeable in a truck with the small 18x12'' slider, as opposed to a bronco with a 60sum inch window that sits 2 feet tall. Slight difference in vacuum
RMcool - beautiful truck man
Wait - Oh my god - how the hell could you give up a GT for a truck?! Maybe Im missing something
Still a sexy truck tho
Mmmmmmmkay there jackass, check the facts before you go insulting people. Ever ridden in a bronco? or any vehicle with large rear windows? I have Sideswept exhaust on my bronco, and I STILL get fumes in the back. Surely its 10 times worse with rear outlet exhaust. And as many have said, it is far less noticeable in a truck with the small 18x12'' slider, as opposed to a bronco with a 60sum inch window that sits 2 feet tall. Slight difference in vacuum

RMcool - beautiful truck man

Wait - Oh my god - how the hell could you give up a GT for a truck?! Maybe Im missing something
Still a sexy truck tho
#2 Both my car and truck have rear exit exhaust and my car is a convertible and I have never smelled exhaust fumes from either.
Have a nice day!
No exhaust fumes in my cab at any speed

Besides, isn't there a law in most states about having anyone in the back of a truck, canopy or no canopy. There is in Texas, I believe!!,,,,98


Besides, isn't there a law in most states about having anyone in the back of a truck, canopy or no canopy. There is in Texas, I believe!!,,,,98
I to checked out dual exhaust straight out the back of my 98 F150 X-Cab 4X4. I pull a horse trailer with two quarter horses valued at $9K - $10K. I was told to absolutely not install straight
pipes out the back or I would risk poisoning my horses.
If you don't believe in the vortex created behind the cab of your truck, you need to try an experiment. Take a paper cup, wadded up paper or plastic water bottle and place it in the bed of your truck just behind the cab. Then when you drive down the highway, notice what happens to the cup/paper/water bottle. You will see it lift from the bed of the truck and be blown into the back of the cab and circle. This is the vortex talked about in this thread. If you don't pull a trailer and don't have a camper shell, or use your rear slider, the by all means put your exhaust system straight out the back.
When you get sleepy from the Carbon Monoxide poison, just make sure you are not on the road in front of me.
pipes out the back or I would risk poisoning my horses.
If you don't believe in the vortex created behind the cab of your truck, you need to try an experiment. Take a paper cup, wadded up paper or plastic water bottle and place it in the bed of your truck just behind the cab. Then when you drive down the highway, notice what happens to the cup/paper/water bottle. You will see it lift from the bed of the truck and be blown into the back of the cab and circle. This is the vortex talked about in this thread. If you don't pull a trailer and don't have a camper shell, or use your rear slider, the by all means put your exhaust system straight out the back.
When you get sleepy from the Carbon Monoxide poison, just make sure you are not on the road in front of me.
I'm not saying it doesn't exist? I'm just saying that I never tow, have a bed cover, and don't drive when I get sleepy. Plus with an extended cab, it's impossible to open the slider once I'm driving it anyway. I like the a/c too much anyway.,,,,,98
possible carbon minoxide poisioning of trailered horses sounds like a very viable reason for a side exit exhaust!
possible carbon minoxide poisioning of trailered horses sounds like a very viable reason for a side exit exhaust!
I'm not shure if anyone has looked or not, but the inside of your exhaust pip is BLACK. If the inside is black, this must be the result of the gases. If you were to pull a trailer, that black might, just might end up on the trailer. For those with high dollar Aluminum horse or campers, or cargo trailers, most dont want this happening. So that is one reason to avoid going out the rear. Like on my truck, I just went with what I liked and looked good. I knew I wasn't going to pull a trailer but still went out the side. Now many will argue, you wheels will discolor, well, mine havn't and probley wont if you take half way decent care of the truck and wash it every so often. All in all, it probley wont make that much difference, just have fun with it and look at it this way, its easily movable if you dont like it or if you start feeling light headed, LOL
98 F-150 X-Cab Flareside
Dual pipes out the back and yes I get real strong fumes from the slider window. And NO I didnt get any when it was dumped out the side. Some vehicles may vary in airflow but the safest way to go is out the side. Of course if your not going to be towing anything that would be affected by pipes out the back then go right ahead. I dont tow anything except a boat and its a POS 1966 Chrysler LoneStar. When, not if, I do change my exhaust again it will be out the side due to the fact that one day I will actually own a true bass boat. Ha, like that day will ever come.. hehehe


