I'm getting ready to do some custom exhaust work on the ol' CTD and have to decide where it will exit. Not stacks, either. That's OK, just not my cup 'o tea, so to speak. I can't remeber now, but thought I read somewhere that taking it out in front of the rear tire (as opposed to the stock location behind the rire) had some advantage. Is that true? Can anyone explain why this is true, If it is in fact true?

Tks...

 

i dont see any advantage, unless you like to clean your rims often

 

Is that why your diesel is black and you are just holding out on me???

 

Ya if you do that you will have to wash your truck everyday to keep the black off it, it would cover the whole rear panel and rim. You could do some big dual rear exit, or I have seen a exhaust that was on a lifted truck that came out underneath the truck.

 

My last truck had it dumping it infront of the wheel, not really any smoke because it was a stock 24v. But it was LOUD. It was straight pipe, and seriously the loudest diesel pickup I had ever heard. Most of my friends run straight pipe, and I was definately the loudest. Especially towing.

 

I don't plan on making alot of smoke. I also am trying to find someplace that will bend a few pieces of 4" pipe for me. I figure it will be easier and cheaper to take it out the front of the wheel and save at least six feet of pipe. I plan on welding up the new pipe right behind the stock flange myself. Then if I ever get a better turbo, I'll put on a new flange.

But I coulda sworn I read somewhere that there is some aerodynamic advantage to the front of the wheel, where like the vacuum created by the slipstream is higher at that location helping reduce backpressure or something to that effect.

 

I'm planing on taking my exhaust out before my rear tires too, only I'm planning on having sideliners.

I'm going to get a 90 degree "T" welded directly on the bottom of the down-pipe, below the frame rail, and then have two pipes extend from the "T" to the sides of the truck right behind the front rears, and then have two 90 degree elbows that turn two stacks right along my running boards. I'm planning on using two five inch stacks as sideliners, tucking the stacks up under the body as much as possible and having them turn straight down right before my rear tires. (They also make stacks with elbows in from the factory, so I could possible use those and weld them directly onto the down-pipe "T".)

I'm vinyl wrapping my truck, so I'm hoping that any soot will wash off of it real easy. And I guess that I'll have to find me some really wide black rims someplace two.

I know that I'll loose a few inchs of ground clearance, but I never off road and only have 1 wheel drive.

 

I had mine dump out infront of the rear tire, for about a week, untill I pulled a trailer for a couple hours down the highway. In town it was awsome, sounded like a semi but the drone on the highway sucked, couldn't open the windows or anything.

So the only advantage is it costs less, which is why I did it in the first place. I also had a turndown tip to use the road to absorb some of the sound, as on my current system.