AT4040 or AT4040XL

[matuva]

Hi all,

I have decided to offer a muffler as a companion to my ATT

I have choosen the Aero Turbine 4".

Now, I'm a bit confused and don't know which one I must buy, the 4040 or the 4040XL.

Any of you have one of those ?

You can find specs here (click on the "view inside" button to see exploded) :

4040XL : http://www.aeroexhaust.com/diesel_muffler_4040xl.html
4040 : http://www.aeroexhaust.com/diesel_muffler_4040.html

If I understand well, the 4040XL is more quiet than the 4040, right ?

The goal is to get as quiet as possible, though it's a flow through on a straight pipe so it will still rumble, without sacrifice to performance due to exhaust restriction.

 

[Rhinopkc]

There's really no restriction since it's straight-through. I wouldn't worry about it, get the one that suits your ears.

 

[Matt Bachand]

You're outta your tree paying 200 bux for a muffler.