I'm about to put a 14" Magnaflow dumped on my 2000 5.4. I was thinking about getting a SI/DO so I have the option of switching to duals if i want to. I was wondering if there is a noticable difference in power or noise between a SI/DO vs. SI/SO dumped. Would the dual out be louder?

Thanks.

 

The SISO dumped woud be louder.

 

Really? I thought the duals dumped would be. Thats good though; cheaper and louder. Anyone else with input?

 

I have another question. Which is louder a 4x9 oval body or 5x8 oval body in a SI/SO 14" muffler. Thanks again.

 

Here's the way my muffler guy explained it to me. A smaller muffler will produce more sound than a larger. And that tone moving through one passage will produce a better tone than splitting it with the SIDO. The SIDO is only for those who want a dual exhaust look. There's no sense in dumping a SIDO muffler since you won't see.

https://www.f150online.com/galleries....cfm?gnum=7238

 

Thanks man.

 

Hey Cent, do you happen to have the part number for SIDO magnaflow you just put on?

 

I haven't put anything on yet but the part # is 12158

 

thanks, I was looking at the full kit, but $65 sounds a lot better than $400..anyway, I was planning on dumping mine until I could figure out exactly how I want to run the tip..anyway, good luck on the install. Let us know how loud it is..Im curious..