Re: H-pipes?

The H-pipe is required to keep your running properly. All it means when someone says there car has an H-pipe is that it is a little bigger than stock and could quite possibly be what's called an off-road H-pipe. Off-road H-pipes are illegal for street use, hence "off-road". What an off-road H-pipe is is cat-less. You will want to put the catalytic converters back in to be street legal and will also make it a quieter. The other thing that is probably making it very loud are the mufflers. Switch the mufflers for Magnaflows (the best on the market and reasonable sound level). They are most likely Flowmaster mufflers (very loud and no power gain).