Any experience with exhaust mods in Perth? I'll be picking up an 07 ti tomorrow that has a knackered centre muffler so I figured I may as well drop in a set of extractors and a new system.

The one quote I have so far is $2100 for a stainless system ex cat and $1800 for mild steel ex cat. He also recommended to retain standard cat as opposed to going hi flow as in his experience that is when people start having problems with them.

This thing is currently running at 12-13lt/100 so I really don't want to screw with that if possible. Pretty happy with current power but plan on doing the PVA mod to open up the bottom end on Saturday.

Has anyone gone from standard system to hi flow and have comparative consumption figures?

Also any recommended vendors in Perth?

Many thanks...