what changes really occur?

[yamajon]

When you change from a 2into 1 muffler to a 2into 2 muffler, what changes can you expect.Is there a power increase,air flow change,sound/loudness change or anything else that really changes? thanks,john

[cdrik915]

I mounted recently a Dansk complete set 2 in 2 , headers (oem ssi)+ muffler 2x85 on my 3.2.

After some modifications (there were leaks at the jonction headers/muffler) to fit it fine , it sounds really great , not too loud at idle , and a Boeing at full throttle !!!!

I'm sure , comparing for example the Fabspeed RSR i had before (I'll no comment...) , that increases torque a little , final speed stay the same .....but what a pleasure to ear this fabulous sound , this motor breathing free....

It's a really good upgrade , like said in Wayne's book .
I would be curious to know exactly the HP increase comparing a factory muffler.......guy's said 20 HP , others less........



Rrrrrrrrrrrrrrrrrrrrrrrraaaaaaaaaaaaahhhhhhhhh !!!!!! That's good !!!!

[Gunter]

Expect a very noticeable drone/resonance between 2-3k to the point of real discomfort.
I tried both M&K and Dansk 2in/2out and the drone is too much.
The 2in/2out will increase performance slightly because it's more of a free-flow but................you'll have to deal with the drone.
IMHO the 2in/2out is great for the track but not for every day driving.

[Greek55]

It will be louder but the difference in power, if any, will not be noticable. It will sound faster.
I have done both. 2 out was too loud for me on the highway. I loved to listened to it idle, though.

[tcar]

You can get 20 hp by going from a 1 in to a 2 in muffler.

Once you have 2 in, you're not going to get much from 2 out.

Will be very, very irritating after the first really cool 20 minutes. Seriously.

[aston@ultrasw.c]

I installed a flowmaster 1 in 2 out (85 3.2)

Any power increase was not noticable.

Very pleasant sound, no droning (happily)

Very pleased with my $200 investment

see ultimate exhaust thread for more info, pics and vid yay