bluetl04

iTrader: (4)

Hey all, so I just noticed that when I started my TL this morning, the smoke only came out the driver side muffler then like 10 seconds later, the smoke started coming out the other side, is that normal or is there something going on there?. I started my girls TL and both mufflers got smoke coming out at the same time. I do have pcd's , v3 jpipe and a comptech cat back exhaust. Anyone had this happen or any info on this?

Eaglesfan9106

Mine does the same thing with xlr8 v1 jpipe and a xlr8 resonated cat back

bluetl04

iTrader: (4)

You think it's normal?

dirtyspitshine

Mine also does it. When it warms up it comes out of the other side also.

Eaglesfan9106

Idk if it's normal but I know for 100% there's no leak because I recently put my 08 type s on a Jack switched out a exhaust gasket and checked all the connecting pipes

Eaglesfan9106

And it makes no sense because isn't the piping to the exit on the drivers side longer? I'd think the smoke would look for the quickest escape route

Turbonut

iTrader: (1)

Certainly nothing to be worried about. Same mixture coming through the single pipe before the split, it's just one side sees more than the other.
Put your hand over the tailpipe exhaust at idle and see if you can feel the pressure difference between each side. Just don't burn your hand.

bluetl04

iTrader: (4)

Thank you for clarifying that bro...i just thought it was odd but nothing to worry about...

1KLRTOY

Simply water vapor, most all cars do this on cold starts on cold days

Turbonut

iTrader: (1)

Some turbocharged BMW's are so bad that at idle very little exhaust can be seen/felt out of one side, but under heavy acceleration it will even itself out.

Eaglesfan9106

But like I said isn't the piping going to the left of the car(the drivers side) longer? Therefore the smoke should come out the right(passengers side)?

paperboy42190

iTrader: (7)

physically speaking, piping length isnt the concern, its the pressure. its similar to the concept of current in electrical systems. it'll always take the path of least resistance, not the path of least distance

Turbonut

iTrader: (1)

I hate cars

True but that's because there's a valve that cuts flow to one side in easy driving for noise control that opens up when you get on the throttle for max power.