How loud it open downpipe?

[SVOboy]

Thinking of taking off my exhaust post downpipe since I have a cat before the downpipe, I was just wondering, what issues will I run into?

[Bunger]

It will be loud and why would you want to?

[SVOboy]

I'm not sure? Weight reduction?

[Bunger]

Don't take it off, it will drive you insane.

[SVOboy]

You're so smart.

[Bunger]

I've run open header before... and it rattles the inside of the car apart... not fun cruising around. I plan on buying some titanium pipe and making myself an exhaust system... I priced it out and it shouldn't be more than $300-350... which is less than most aftermarket exhaust systems.

[SVOboy]

I was thinking of having an exhaust bypass valve to run it through a pipe into the interior and under the seats so I could warm my arse up in the winter.

[Bunger]

Then don't forget the fresh air vent fo yo lungz.

[90CivicStandard]

Don't do it. It's loud and annoying.

I ran an open downpipe on my turbo setup a few times at the track. Even at the track and with turbo (which muffles the exhaust some) it was still loud and embarassing.

Just for ****s and giggles you can disconnect your cat and drive around the block, you will see how much it sucks. lol

[95metro]

It's amazing how well mufflers and resonators actually kill engine noise. You really can't comprehend the noise level. Think Harley and add 10dB (double spl).

[The Toecutter]

Think Harley and add 10dB

I really love that about the GT6... If only electric motors made noise like that...

[JanGeo]

I remember running my 500 Morini with no header pipes (V twin) all you heard was crack crack crack and blue flame popping out of the head at idle - was really cool. Then I ran the BMW 1000cc boxer with just the header pipes OH MY G O D you don't want to do that. The Geo sounds pretty cool at certain speeds and really nice without the resonator just after the cat - gives it a little throaty snarl.

[SVOboy]

I won't be running ODP.