Just found out the stock cat is blocked on my exhaust rendering the fine tuning of my tune quite difficult. (no this is not an april fools joke)
Have just ordered an Invidia s/s dump pipe with 100 cel cat built in.
http://www.prospeedracing.com.au/produc ... MATIC.htmlI thought, well I wanted to do the dump and now that the cat is stuffed, I may as well do both rather than spend 200-300 + fitting for the cat alone. My mate is a mechanic and owes me a favor too so I'll get it fitted by him just in time before Matt comes to SA for a tune tweak later this month.
It kind of all adds up come to think of it. The economy on the car has gotten worse for a while now (even prior to the exhaust being fitted), the power from a certain rpm range is a little stiffled too. And then with the boost cut issues, nothing added up. But I reckon Matt is spot on with the cat being blocked as it will cause similar symptoms.