Stacks zero, one, or two??

A KW dealer mentioned , IF I recall correctly...That on the 680 dual stacks, only the driver side stack
"works" the passenger side is not connected...for show. Mine is a weed burner....I like stacks personally

 

I have a 2017 579 with exhaust by the doors. The driver side is a dummy, it has the elbow at the bottom but it stops at the frame rail. When it’s cold I look like a dummy with vapor only coming from the passenger side.

 

I drove a KW w900 flattop with straight pipes for a while hauling frac sand. It was cool for all of 5 minutes. Once I woke a whole neighborhood up at 3am, the fun of it wore off as I was having a conversation with the law.

 

I learned not to drive weed burners.

The macks at port east had them in Baltimore back in the 80's when it's really early in the night, there is usually a inversion layer 20 feet above the ground which manages to capture and keep you covered in blue exhaust as you warm up over time until you reach operating temperature. Cold engines in big trucks in those days pretty much gassed me. Never again.

I prefer dual stack that can let the engine breathe. say 4 inches or so on each pipe. Nothing outrageous.

I usually back up my big truck opinions in my personal life, a few of my older cars had glass pack on straight dual pipe from headers on back. Ive been told that Ive thrown away quite a bit of fuel burning them off at the ends of the pipe in top end.

These days I am not worried about whats on the vehicle. If you are not already casterated and governed to where you don't get to have a engine wound to red line, there is no point. Just so long its not a weed burner.

 

I got the weed burner. Luckily I have an apu don’t have to worry much about it unless I parked moments ago after a long drive I gotta park near the grass than I would keep my eyes open for the next 20 mins.

 

As a company driver, I'll put up with whatever. It's in the job description. BUT. The day will come I decide to own my own truck... and then it'll have stacks. Twins, for symmetry if nothing else

 

My cummins Dodge, used to be a weed burner. I built dual 6 inch black stacks.

I’ve always wanted them.

It’s not extremely loud at all, some other pickups with mufflers are louder yet.

Just a very deep rumbling that vibrates houses.

No weed burners for me.

My father’s kenworth has a weed burner.

I’ve seen show trucks with big pipes going up but no exhaust goes through them. Just a weed burner underneath to keep the big pipes shiny.

 

One wouldn't think you'd need a water trap. With 900* of exhaust boiling it out.

 

Driver's side is the fake stack. Exhaust manifold and turbo are on the passenger side of the truck. Seems pointless to me. I prefer dual stacks but if one's a fake it just taints it for me.

 

But nowdays the exhaust is soooo fresh. Oh ok. Somewhere i read, or heard when all these dpf filters were coming out ,how pure the exhaust will be. When my dad had trucks 50 years back, the weed burner exhaust had to extend back to the last crossmember by the tail lights. These were 190 model gas 549 cu in, International semi trucks. It probably was a Pennsylvania inspection law?