DIY Exhaust Mod – Gain of 10+ HP!!!

[Slate 01]

JDLMODELT, comments like yours have made me stop considering drilling anything into my exhaust. The exhaust sound is important to me, but in reality just a ego/notice me kind of thing, at least for me. I actually don't need the ego stroke to love my Porsche. To each his own. However if I come across a real nice exhaust system that is going cheap, then I will be stroking my ego immediately.

[chipmunk]

My observations in all of this are that Porsche must have designed a quiet exhaust for a reason - as JAAY has pointed out, all his previous after market exhausts have droned. Also, randomly drilling holes in things is generally not a good idea and once done there is no turning back.