Hey guys,

I've been researching for quite some time on what kind of exhaust setup I want to put on my truck and I have decided to go with a SI/SO setup. I want to do a SI/SO setup because it seems like everyone has a dual exhaust setup and I wanted to change it up a little bit.

My plan is to start by removing the two rear cats (because I have an 04' and I have 4 cats) and run new pipes to a Magnaflow 10778 - 2.5" -> 3" Y-pipe then running 3" intermediate pipe to a Magnaflow 14419 - 14" Magnapack 4" Round. Then run 3" pipe back behind the passenger side wheel similar to the stock location topping that off with a black MBRP Angled Rolled 3 1/2" ID x 4" OD tip.

First question, would that muffler sound good for a SI/SO 3" setup? And as far as adding the 3 1/2" inlet exhaust tip, do you think it would be better to run a 3 1/2" tailpipe from the muffler back (like the Banks Monster exhaust setup) OR simply flare the back end of the tailpipe to fit the 3 1/2" tip?

Please, let me know what you guys think.

 

3" will be sufficient and very loud with a bad drone around 1800 RPM's. It will sound pretty wicked at the tailpipe.

 

yes good setup.

 

I was afraid of a lot of droning with the 14" Magnapack. I want my exhaust to be loud but nothing crazy. I'm guessing it may be better to go with a 14" oval body Magnaflow to eliminate some of the drone? Or maybe a bigger round body?

 

Drone won't be that bad. No where near as bad as true duals are.

 

Sounds good. What you think about the putting the 3.5" ID tip on there...should I go 3.5" on the tailpipe from the muffler back or just flare it up to 3.5" at the end of the tailpipe to compensate to the tip size or do you think that will look weird?

I would just go with the 3" ID tip but I really like the SS black tips MBRP makes and they only come in 3.5".

 

Run the whole thing in 3" and have a 3.5" tip welded on the end. You can go as high as a 4" tip, but anything higher starts to look off.

 

Ok, that's what I was thinking. Ya, I wouldn't go any bigger than 4" unless I could blow some black smoke

 

sounds good

 

Well I just order everything I need for about $150, thanks to some great coupon codes. That exhaust tip cost as much as the muffler! How much do you think it would cost for a exhaust shop to put it all together?

 

It'll definitely sound good but it will be loud and the drone will suck while pulling a trailer. My old truck had a similar setup at one time and I tried both a SI/SO and a SI/DO. Both of them sounded great; the SI/SO was a little quieter but deeper and the SI/DO was a little louder but wasn't as deep. The main difference between what I had and what you will have is that I was using two high-flow Magnaflow 94106 converters and you are going to be using two factory pre-cats. If I remember correctly though another member on this site (DarrenWS6 I believe) came to the conclusion that the factory pre-cats are basically the same thing as Magnaflow 94106 converters.

Check out the video in my sig if you want a good idea of what yours will sound like.

 

x2

 

Ya basically I'll have high flow cats without spending $100. I'm not too worried about the drone while pulling a trailer, my truck is more of a weekend warrior if that. My work truck is a 2008 Tundra Crew Max which pulls a trailer quite nicely. I wouldn't ever buy a Toyota truck but I must say that truck has got some power.

I came across your youtube video when I was doing a little exhaust research, sounded real good.

 

shop should charge you about $100 for installation.

 

My 5x11x22" SI/SO 3" Magnaflow droned a little at 70 mph but not overly annoying. I can only imagine the drone If I ever towed with that setup.

I recommend Tylenol and ear plugs with the Magnapack.

Good luck...