The custom/aftermarket exhaust thread! [Pics + Videos]

[mrbond]

Originally Posted by 2DtheDon

Sorry for this noob quesiton but whats the difference between the catback and the axle back?and is it true that the axle back has no increase on the HP?

It's not necessarily true that an axle-back won't increase horsepower. It depends on how restrictive it is and/or the baffling design. It is mainly for sound, however, due to the design of the Yaris exhaust system, that's the only thing you can change other than getting a whole midpipe. A catback system goes from the catalytic converter all the way to the tip, and will result in a higher hp gain.
Hope that helps.

[thebarber]

Originally Posted by mrbond

It's not necessarily true that an axle-back won't increase horsepower. It depends on how restrictive it is and/or the baffling design. It is mainly for sound, however, due to the design of the Yaris exhaust system, that's the only thing you can change other than getting a whole midpipe. A catback system goes from the catalytic converter all the way to the tip, and will result in a higher hp gain.
Hope that helps.

you can always cut your midpipe after the resonator (which is 2" thru) and replace the res-back piece which is 1.75" with a bigger pipe. just weld it on....i had to do that w/ my XRS and my magnaflow catback i bought for it....either clamp or weld...

from what i read, you gain tq across the powerband (thus increasing hp past 5800 or so fairly significantly) with just an axleback due to the stock mufflers extremely restrictive design...