Exhaust cutout safety?
Thread Starter
Staging Lane
Joined: Aug 2005
Posts: 61
Likes: 0
From: Richmond VA
Exhaust cutout safety? 
I've got a flowmaster on my Z28. I know they dont flow well, but I think it sounds great, so its staying. I am going to put a cutout after the y, before the axle, and i was just wondering about the safety of the exhaust pouring out under the vehicle. I live in VA and i let the car warm up before going anywhere... will this mean exhaust can creap into the inside of the car? Im sure while driving, it is not a problem since air will be running underneath the car, but what about traffic, long stop lights, or just letting my car idle...
Also, as far as the heat put off by the exhaust, will it damage the underside of the car?
I tried a search and could not find anything on it, so if you know of a thread about this, just point me in the right direction. Thanks.
TECH Fanatic
iTrader: (7)
Joined: Dec 2003
Posts: 1,305
Likes: 1
From: Las Vegas, from Crystal Lake IL
i have the same setup on my 01 z28.
flowmaster muffler, and a cutout. just aim the cutout towards the outside of the car and you should be fine.
If you are worried about it, pickup an electric cutout flange, then you can open and close from inside the car!!
flowmaster muffler, and a cutout. just aim the cutout towards the outside of the car and you should be fine.
If you are worried about it, pickup an electric cutout flange, then you can open and close from inside the car!!
yup i have the same setup aswell except i have longtube headers and the cutout sounds mean as hell open especially with the headers. but the cutout will be fine its so far back it will flow just like the pipes, i have the cutout under the passenger rear seat and no exhaust coming in for me. you will be fine.
TECH Senior Member
Joined: Dec 2001
Posts: 5,399
Likes: 3
From: Jacksonville, FL
You'll get black soot under the car for sure, heat is no problem. Ideally for safety you always want the exhaust to exit from outside the perimeter of the car. I haven't had any problems but never warm the car up, and always leave the drivers side window cracked open a couple inches.
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I have a 24" Dynomax in my I pipe . Behind that right where the pipe turns upward to go over the axle is where I have a cut out that I made out of a 3" collector I got from Summit. I leave it open all the time. Sounds mean and I still get the rumble from the Hooker cat back.
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