Subaru Impreza station wagon

You could straight pipe it back from the cat but you won't get very far until you get a ticket. Don't eliminate any O2 sensors.

Yes...but why? You won't improve performance, given the big 4's torque curve and lack of VVT.

Just really want the Rumble to be honest

Probably just a blat or roar.

Thank you’s for your help much appreciated

Yup,,,no rumble.

Why no rumble? So would I be wasting my time installing the invidia cat back?

...and your money.

Why would there be no rumble? Can you tell me the full story please?

Modest flat-fours don't exude a preponderance of low frequencies. This tenor rather than basso.

So there’ll be no wob wob wob wob if I install?

As in doo-wop (50's kids sound) or modern budget sci-fi soundtrack?

Shooby do whop.

Just got the invidia cat back racing exhaust installed in my non turbo & have got the rumble

(50s kids sound) it is doo-wop shooby do whop wob wob wob I’ve the the rumble you’re not much of a Subaru guru after all