Nellie

Hey Guys & Gals:

Anyone removed the exhaust flap in their muffler? I know WORKS have under their SkunkWORKS 'project' and although their are no (or very minimal) performance gains, if beefs up the exhuast note at idel.

Just wondering.

robertrinaustin

iTrader: (5)

What and where is it? Can you post pics? Sorry for the stupid question

boomn29

iTrader: (47)

WTF??? Same here.

OnlineAlias

There's a flap inside the muffler that lifts out of the way at higher RPM. It just lays there. Someone removed it on the boards, although I don't know if they said it did anything..

robertrinaustin

iTrader: (5)

I looked at my stock muffler. Is it the peice at the bottom of the pipe that connects to the rear section of the exhaust? That was all I could see. The muffler has the almost 90 degree turn inside but looks straight through.

justchil

iTrader: (44)

There was a post on this a long long time ago... The guy said it was a real pain the *** to get the flap out.. better off buying a muffler or catback IMHO

Nellie

robertaustin:

Yeah, I think so. I'm guessing you can get to it by dropping the muffler from the pipe and access it through the resulting fitting hole (if you see what I mean). There's a diagram of it in the service manual and it's literally a flap which (I'm guessing) is opened or closed depending on exhuast flow.

I was hopoing someone had already done it and could post some notes.

Again I don't think it does anything performance wise, just adds a few more DB's to the exhaust sound.

Nellie

Justchil:

Bingo! Thanks.

matt55

iTrader: (12)

I did it a while back , it was a piannnn , the biggest improvment was the boost came on alot quicker. AND I didnt hear the flapper door slam close any more. (For some reason I lesten too closely some times)

EvolvedDSM

iTrader: (3)

http://www.columbusdsm.com/forum/viewtopic.php?t=4511

I wouldn't even bother

Zeus

iTrader: (66)

It's spring loaded and it requires the exhaust pressure to push it open... you can easily see it if you pull the muffler. I looked at it, but diidn't see a "clean" way to remove it.

Mike W

iTrader: (1)

I have done a few. Easiest is to use a piece of rod to hold it open. Get a piece about 6 to 8 inches long. Stick it into the muffler inlet so that it holds the flapper open. Weld the rod to the inside of the pipe just inside where you can get the MIG welder into it. Takes about 5 minutes.





Mike W

Nellie

Thanks Mike - nice post and best option I think.

Nellie

matt55

iTrader: (12)

I took off the muffler and with a long screwdriver and hamer I made mine stay open by beating on it . Look like **** inside but it was all balck as soon as you run the car. This was pain it da *** to do also. But I "felt" a diffrance in spool up.

GottaGoFaster

My Buschur Muffler delete pipe does not have a flap