New Muffler

[AnthonyL Jones]

I had a Flowmaster 40 muffler put on my ST and what a difference!!!It's sounds great,better MPG,and a little more get up and go!!!EXCELLENT UPGRADE!!!!

 

[ed ritti]

how much did the gas mileage improve?

 

[Jerry Gerner 2]

Two things to consider. 1st. Their changing from winter blend to summer blend gas so you'll get better gas mileage and 2. It's getting warmer out which will give you better mpg's as well. I know when I installed my Flowmaster with duals I gained about a 1mpg increase but went up and really opened the trucks potential when I installed the Random Technology Ypipe and High Flow Cat. Huge improvement in power, mpg's, sound is awesome now, torque, etc... :haveabeer::banana:

 

[Big K]

My muffler guy tried talking me into a 40, but I went with the 50 series. I think mine sounds great on the 4.0L, I'd love to hear a 40 series on a V8!

 

[AnthonyL Jones]

About a 1.2 increase in MPG.

 

[Jerry Gerner 2]

Yep, that sounds about right. Did you remove the silencer behind the muffler?

 

[Kevin Bentley]

did you keep the factory piping and just install the muffler? ive been thinking about putting a 40 series flowmaster on mine but cant decide if i want to or not

 

[Henry Suarez]

I just took my muffler and silencer off and replaced it with a Flowmaster 50 series. My truck sounds awesome. This is a must do for gen2 v8's. Also did the Roush tip and it looks Kick Ass!! Next mod...Saleen Pulleys.

 

[paul bessey]

sound clips PLEASE i wanna hear it before i cut te oem on my 08 st wit a 4.0. thanks paul i know utube has tem but most are for older st's

 

[Supercharged SVT]

I would like to hear as well... I went Magnaflow and a Gibson 3" Cat-Back prepping for a blower. Love the quiet purr and then the cup style roar under full throttle.

 

[AnthonyL Jones]

Yep just installed the muffler no other changes and it sounds DAM good!!!!!

 

[Mike Limoges]

I got a Flowmaster super 44 muffler on my 07 GenII, 4.6L It sounds awsome and I DO GET A LOT OF COMMENTS.:banana:

 

[brian brown 3]

How is the sound at Idle and at 35MPH crusing speed. I would like to get some good sound out of my exhaust, but not a loud one and not at idle.



Could you please advise in all other RPM ranges



Thanks!

 

[brian brown 3]

I just went to the muffler shop... going to schedule next week for my replacement system



Dual out, stealth underneath exit in back.



going with Flowmaster 50 SUV. I hope it's not noisy inside the cabin.



Brian

 

[brian brown 3]

I decided not to change the stock muffler at this time. I am happy with my OEM... is that bad?

 

[Carey Frennier]

yes. you will be 10x happier with an aftermarket muffler! you don't know what you're missing.

 

[TRACket Paul]

I am happy with my OEM... is that bad?

:rofl: why would it be bad, to be happy?

 

[brian brown 3]

Pyco.. why 10 times happier? please supply details to help presaide me to chnage it.



Brian

 

[Supercharged SVT]

Here is my take, I went Magnaflow 22" offset stainless. Immediate after getting home I swapped with 100 miles, the purr was much better but the overall response of the throttle before the blower was a huge notice. When you jump on it, you go. The best thing is I picked up 2mpg without changing any other item. Now to be fair, I did spend $74 more on a Gibson catback pipe to eliminate the 100lb resonator. Now with the supercharger, it screams under pressure but the harmonics are near OEM at highway speeds. Some people think loud is fast but only fast is fast. Loud is annoying on trips even if it's just to the store in my opinion.