So I recently dumped my exhaust on my 4.2. I have an 18" Magnaflow SI/DO muffler, that's all I can say. I am no wanting to go back to a SI/SO setup, but had a question.

I don't wont to spend the money to go buy a new muffler then pay to have it installed along with a new tail pipe...so here is my question.

Can I add a Y-pipe to collect the dual exits from the muffler into a single pipe? I know it will mess with the flow a little bit, but honestly, how much flow can a 4.2 with 148k miles have? :o

So would this be a feasible option to save a few dollars, and still keep the general sound of the exhaust?

 

yes and yes, it wont make a crap really

 

So no back pressure kill or anything? (like I have a lot to begin with...)

 

well how are you going to run it? factory exit? it wont hurt anything



......back pressure

 

lol. thats a banned word... guess he didnt get the memo.

 

sorry. don't really spend a lot of time in these parts of the woods.

so this will be fine to do?

 

haha guess not

YES!

 

haha, its all good. i actually asked the muffler shop about back pressure when i had my exhaust installed. it was only later when i really started to read around here that i learned that it would be pretty difficult to have backpressure problems on our trucks...

 

If its a 2.25" outlet muffler, you will be just fine running a 2.5" tailpipe & 2.25" dual to 25" single Magnaflow Y pipe.

 

i'm pretty sure its a 2.25" exit, because thats what the inlet on my magnaflow tips were.

how much would this possibly cost me?

 

$36.57 shipped for the Y pipe part #10858, about $50 in labor.

 

Office space. Awesome