nzmatto wrote:Changing the exhaust can increase the power, but only by a small amount. Boring it out to 180HP probably means they have bored out the engine block to its maximum size and put some oversized pistons in it. Although that's pretty costly, and there is other, cheaper ways to produce more power. In any case if he's got a big bore he's an attantion seeking dickhead, so was probably lying anyway.
I'm with Mono on this one. except if my car had a big bore exhaust I'd shoot* my son.**
* I don't have any guns.
** I don't have a son, but if I did he'd be the only one gusty enough to come near to my holden with a big bore exhaust.
Always someone sencible comes along and spoils a completly pointless thread.