my cobbled together thing/questions as I think of them

[19Walt93]

Anyway, as for questions, I need to replace the exhaust, the most recent thing is that there is a hole in the muffler, and I'm going to just replace the exhaust, doing a cat delete because its legal where I live. I was wondering, what will give more power, a dual exhaust or a single?

There's a NH inspection license in my wallet, deleting the cats is not legal in NH. An 03 also needs OBD II inspection so I wouldn't delete anything. The truck has cat monitors(that some call downstream O2's) that are inputs to the PCM. A cat back system is the way to go.

 

[19Walt93]

Operating a vehicle made after 1973 on the road without a cat is Federally illegal.


A true dual exhaust with either an h-pipe or an x-pipe will provide more power than a single.

First, cats didn't appear until 1975 but it's still illegal to remove them.
Second, the engine doesn't care how many exhaust pipes it has, it only cares about flow. A 2 1/2" single system flows more than a dual 2" system as long as the bends an muffler are equal. Keeping in mind that a single muffler needs to flow more. A single 2 1/2" system is more than adequate for a Ranger with any engine Ford put in it. I hate to see dual exhaust with one side running under or close to a gas tank.

 

[03ishfrankentruck]

Great, good to know before I started tearing stuff out. Somewhere along the line I got the wrong info. Thanks for all the help! I'm trying to not be the dumb new kid, I am more than open to correction and input.

 

[03ishfrankentruck]

First, cats didn't appear until 1975 but it's still illegal to remove them.
Second, the engine doesn't care how many exhaust pipes it has, it only cares about flow. A 2 1/2" single system flows more than a dual 2" system as long as the ebnds an muffler are equal. Keeping in mind that a single muffler needs to flow more. A single 2 1/2" system is more than adequate for a Ranger with any engine Ford put in it. I hate to see dual exhaust with one side running under or close to a gas tank.

Okay, great, that is super helpful. I was planning on 2.5 already, and if I need to keep the cats a single exhaust will be way easier anyway.

 

[Blmpkn]

First, cats didn't appear until 1975 but it's still illegal to remove them.
Second, the engine doesn't care how many exhaust pipes it has, it only cares about flow. A 2 1/2" single system flows more than a dual 2" system as long as the ebnds an muffler are equal. Keeping in mind that a single muffler needs to flow more. A single 2 1/2" system is more than adequate for a Ranger with any engine Ford put in it. I hate to see dual exhaust with one side running under or close to a gas tank.

Ah alright, I thought it was 74 they became standard.

Science definitely disagrees with your sentiment about the motor not caring how many pipes it has though..