Quote:
Originally Posted by Gunmetal Speedster
Makes sense now, I thought it was the usual "so the neighbors dont hate me"  you're definitely gonna be set with the xtreme, I heard that in person from a buddy who cammed his car and it sounds so nasty. But yeah, if you're in that strict of an area I would plan on doing headers and cats and just leaving the stock catback until you're good to bring out the Corsa. If you're keeping stock mufflers your set up shouldn't be loud in the least bit until you get on it.
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Glad i could further elaborate

.... so given the current situation explained, would you think catless vs catted on the stock l99 catback would make difference at idle? should i spend the extra money for a set of catted pipes, or would the catless ones i already have do just as fine sound wise at idle?