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[OFC Ranger]

In my rush to place an order for a Flowmaster 40 muffler to get it delivered by today and thus be able to meet my exhaust guy tomorrow morning at 6:00AM I now have a 2.25 in/out muffler. I had multiple screens open and purchased wrong one. Totally on me.

So our trucks put out about 240HP to the wheels stock, a perfectly acceptable range if our stock exhaust happened to be a 2.25 system, which leads me to my question.

Besides a physical bottleneck, any other unintended consequences inserting a 2.25 muffler into a 3.0 system? Is a wormhole going to open up when I drive down the road and space aliens emerge? Or something a little more minor like some increase on power on the front end with a loss on the back end?

Options:

A. Screw it, install it because of negligible outcome.
B. Screw it, do a muffler and resonator delete like I had planned, if I don't like it, order proper muffler size and put it all back together with the new one in place.

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[slowmachine]

There’s no way I would install it. If you’re going to run a muffler at all, get the right size.

 

[OFC Ranger]

There’s no way I would install it. If you’re going to run a muffler at all, get the right size.

I promise im not be obtuse, but why? What will happen? Im a logician so its going to drive me nuts if its not explained to me.

 

[slowmachine]

I promise im not be obtuse, but why? What will happen? Im a logician so its going to drive me nuts if its not explained to me.

The simplest explanation is that more restrictive exhaust = less power, and may even decrease fuel efficiency. Exhaust tuning is a real thing. Nobody mods to a smaller pipe.

 

[FoD]

Think of it like a garden hose, what happens if you restrict flow - back pressure! Is that good (sounds like constipation to me) but I am not an exhaust expert by any means

 

[NvrFinished]

A smaller diameter means that you will be creating more back pressure. I'm no expert on turbo charged engines, but from my understanding, if you increase backpressure on a turbo engine you will be raising EGT and cylinder temps because the cylinder is not evacuating the exhaust gasses as it should. This can lead to a richer fuel mixture, check engine lights, and etc.

 

[Shadowdraxx]

B all day long for me, one thing ill add is the noise is somewhat muted due to the turbo. It might be louder than u like esp on start up but it isn't obnoxious:

 

[OFC Ranger]

The simplest explanation is that more restrictive exhaust = less power, and may even decrease fuel efficiency. Exhaust tuning is a real thing. Nobody mods to a smaller pipe.

That is false there are plenty of people that modify to a smaller exhaust to get more low end power at the expense of high end power. Now I’m not sure how that works turbo versus natural as I have not read that far into it I just know that a smaller exhaust does not automatically mean Less power as I said he sacrifice to have more on the low or get more on the high speaking relative to RPMs

 

[OFC Ranger]

is it possible to expand the holes to 2.5"
a good exhaust guy can cut and weld right??

Yeah that is a possible option three I guess I’ll find out in the morning

 

[NvrFinished]

That is false there are plenty of people that modify to a smaller exhaust to get more low end power at the expense of high end power. Now I’m not sure how that works turbo versus natural as I have not read that far into it I just know that a smaller exhaust does not automatically mean Less power as I said he sacrifice to have more on the low or get more on the high speaking relative to RPMs

Naturally asperated engines - yes. Turbocharged engines - no. The less backpressure the better. I suggest you google "increasing backpressure on turbocharged engines". It's fairly interesting.

 

[Techcargt]

Send it back and get the right one ! Here is a little chart that might help. https://www.exhaustvideos.com/faq/how-to-calculate-muffler-size-pipe-diameter/

 

[OFC Ranger]

Naturally asperated engines - yes. Turbocharged engines - no. The less backpressure the better. I suggest you google "increasing backpressure on turbocharged engines". It's fairly interesting.

Thanks!

 

[OFC Ranger]

you were still on the toilet werent you?

I'm decent at multi-tasking. Throw a pooper in and all that goes out the window...

 

[wanted33]

Jack, I'd sent it back. My OCD wouldn't even let me think about installing it on my truck. Sux to me sometimes.

 

[OFC Ranger]

All of you nerds failed me. Its a 2.5" system, they just put a 3" on the resonator exit till the tip. lol

Flared the muffler and installed it, with resonator still in place. Still too mild for me. Go back next week try a reso delete, if that failed, delete the muffler.

Edit: Will I even get anymore out of the sound removing the resonator? Or is that mainly for isolating drone?

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