What are the differences? Catback exhaust vs Axlback exhaust and which works on a 2008 Scion XB?

Question

What are the differences? Catback exhaust vs Axlback exhaust and which works on a 2008 Scion XB?

Answer 1

catback will be usually be longer, which means more horsepower. axleback is shorter so less power but its cheaper. and you wont get too much hp out of it but its better for your engine and you will get something out of it.  

Answer 2

just replacing exhaust won't do much for your system either way...if you have the money, go with catback exhaust, it sounds better and would be more efficient than just replacing muffler with axleback...

of course, if money is not a big issue, than just replace the header too while you are at it...

of course if money ment nothing to you, than go buy a porshe and never need to upgrade your exhaust in the first place

Answer 3

an axelback replaces the muffler, keeping the stock midpipe, s pipe, etc and catalytic converter. they are generally more quiet and since the exhaust piping is stock, there will not be much increase in hp. however, the catback systems replace the whole exhaust system, removing the secondary catalytic converter. they produce much more horsepower than an axleback would because the catalytic converter is restrictive and lowers hp, so removing that would allow for a greater flow of exhaust fumes from the engine.

here's an analogy: in a cup of water, try blowing bubbles through a small, coffee-stirrer straw. its pretty difficult, but then try blowing bubbles throw a normal sized drink straw...it's a lot easier. see what i mean? the catback system is like the bigger straw which lets the air flow more freely and therefore puts out more power.

there are many catback/axleback exhaust systems out there, some brands i know of are:

1) tanabe

2) greddy

3) megan

4) tsudo

5) hks

i know there are much more other ones out there, go to a scion xb forum and ask around. people there will help you out much more than we can here.

Answer 4

Depends on what axle they're talking about.

If it's the front axle, it will include everything, including the cat.

If it's the rear axle, it's pretty much just a muffler.

As for what works....either would work.

But none of the above will do a single thing for your car.

It's a Scion XB. At most, you might see 1 or 2 extra whp. And no, that won't be enough to notice. It might actually make the car slower, because it's too high of an upgrade for the vehicle you have.