are there any downpipes for the xA, it would help free up a lot of power, but i cant seem to find any. if anyone knows let me know.

 

Unfortunately, no downpipes. The xA/xB exhaust is pretty simple:

Engine - Headers - Flexpipe - Catalytic Converter - Mid pipe/resonator - Muffler - Tip

The only way to completly defeat the stock exhaust is to have a custom cat-back system built for your car and to your specs.

The most cost effective thing to do now is headers and a good axle-back muffler.

 

magnaflow does make a cat back exhaust but it has to be clamped or welded on it does cost quite a bit too.

 

There's a huge thead on getting more power from these engines. The bottom line is an intake, header and exhaust give the best gains.

 

volumetric effiency

 

I found best gains from Perrin Pulley so far. I have read many others having the same results. I got pulley off ebay for $125 shipped.