rednose wrote:dja wrote:mine is a 2007 TB STI wags mate.
You could get any 3 inch setup adapted to your current rear mufflers, and get a similar sound, and power benefit.
How loud is it compared to stock?
X force generally make the Liberty exhaust kits upgradable in 3 stages: Down Pipe, Centre & Y Pipe and Rear Mufflers.
You should be able to upgrade any of your standard exhaust components at any stage (not 100% on Gen V's though)
They normally sell either down pipe & cat back systems, however X force distributors can delete the rear mufflers for a stealth exhaust upgrade which also works out much cheaper.
X Force also do mild steel and stainless systems which are both good however mild steel is heaps cheaper and stainless will last the lifetime of the car.
Most of the power increase comes from the down pipe (with high flow cat) then the centre & Y pipe followed by the rear mufflers last.
The rear mufflers by far make the biggest difference to noise output.
Upgrading the exhaust from the Turbo back and keeping the rear mufflers should keep it very close to stock sounding with a very slight sporty note.