only right side exhaust

Lucky Song · 01-03-2008, 09:19 PM

anybody know that when you warm up your car in the morning, and you can see only right side of exhaust pipe has smoked. and left side have to wait until about 2 mins then you will hear the grinding sound and click and smoke come from right side exhaust. do you think weird!! any body has the problem like that?

FirstClass · 01-03-2008, 09:21 PM

It's supposed to do that.

HyperM3 · 01-03-2008, 09:21 PM

Search "Golftee mod"

Siciliano611 · 01-03-2008, 09:21 PM

search man....i thought that was weird myself but apparently the left side doesnt come out till its warm (butterfly valve opens)

raleedy · 01-03-2008, 09:21 PM

Wow, nobody ever heard of that. You better get that car in to the dealer FAST!!!!

HyperM3 · 01-03-2008, 09:22 PM

^ most posts Ive ever seen in the same minute...

SLCGoonski · 01-03-2008, 09:30 PM

just had mine on a lift yesterday...still working on finding some snow tire rims. Can see the little valve really easy. Amazing all the little things you'd never notice on these cars.

Lucky Song · 01-03-2008, 10:30 PM

Quote:

Originally Posted by sicilianoNJ

search man....i thought that was weird myself but apparently the left side doesnt come out till its warm (butterfly valve opens)

Hi thanks for your info. but do u know why? and the reason? thanks cuz this is my first german car.

Kev · 01-03-2008, 10:32 PM

Quote:

Originally Posted by Lucky Song

Hi thanks for your info. but do u know why? and the reason? thanks cuz this is my first german car.

To warm up the cats supposedly.

Revlis actually has a post on how to disconnect the butterfly valve wiring harness that is located in the trunk. Once you had that disconnected, the valve will stay open at all times.

Lucky Song · 01-05-2008, 12:52 AM

what does butterfly valve do in the left side of exhaust? thanks if anyone can provide me a answer info!

HyperM3 · 01-05-2008, 08:34 AM

Quote:

Originally Posted by Lucky Song

what does butterfly valve do in the left side of exhaust? thanks if anyone can provide me a answer info!

FWIW, youre going to have to learn how to search for things. Enough people told you that it was searchable which means its not an obscure topic.

However, the butterfly valve is on the left side of the exhaust. It stays closed until you get to a certain RPM and then it opens. It does this to A) Warm up the cats(supposedly) B) restrict emissions noise C) give us peons something simple to mod and feel good about.

That was your one freebie answer. Good luck and enjoy the forum.

Lucky Song · 01-05-2008, 11:24 AM

Quote:

Originally Posted by HyperM3

FWIW, youre going to have to learn how to search for things. Enough people told you that it was searchable which means its not an obscure topic.

However, the butterfly valve is on the left side of the exhaust. It stays closed until you get to a certain RPM and then it opens. It does this to A) Warm up the cats(supposedly) B) restrict emissions noise C) give us peons something simple to mod and feel good about.

That was your one freebie answer. Good luck and enjoy the forum.

thank you so much for ur ifo

Orient330iNYC · 01-05-2008, 01:00 PM

Quote:

Originally Posted by Lucky Song

thank you so much for ur ifo

it also closes back up at cruising speed when the engine rpm drops below a certain level to reduce droning. if you disconnect the valve, you'll hear the difference while driving.

01-03-2008, 09:19 PM	#1
Lucky Song Private 5 Rep 58 Posts Drives: 2007 metallic blue! Join Date: Sep 2007 Location: n.j iTrader: (0)	only right side exhaust anybody know that when you warm up your car in the morning, and you can see only right side of exhaust pipe has smoked. and left side have to wait until about 2 mins then you will hear the grinding sound and click and smoke come from right side exhaust. do you think weird!! any body has the problem like that?
	Appreciate 0 Tweet Quote

01-03-2008, 09:21 PM	#3
HyperM3 Too many Alex's, from now on, call me Beaufort 342 Rep 6,188 Posts Drives: See Sig Join Date: Feb 2007 Location: Lawrenceville, NJ iTrader: (8)	Search "Golftee mod" __________________ 13 HD FatBob 17 A4 Glacier/Black 1st Edition/Pre+/Sport/EurocodeTMD/Racechip 16 S6 (gone),14 S6 (gone),14 S6 (gone),13 S6 (gone),10 S4 (gone) 07 335i(gone)
	Appreciate 0 Quote

01-03-2008, 09:21 PM	#4
Siciliano611 Major 397 Rep 1,303 Posts Drives: SMB M6GC Join Date: Mar 2007 Location: ATL iTrader: (3)	search man....i thought that was weird myself but apparently the left side doesnt come out till its warm (butterfly valve opens)
	Appreciate 0 Quote

01-03-2008, 09:21 PM	#5
raleedy Colonel 160 Rep 2,248 Posts Drives: 2016 228i 6-speed Join Date: Jul 2005 Location: Portland, Oregon iTrader: (0)	Wow, nobody ever heard of that. You better get that car in to the dealer FAST!!!!
	Appreciate 0 Quote

01-03-2008, 09:22 PM	#6
HyperM3 Too many Alex's, from now on, call me Beaufort 342 Rep 6,188 Posts Drives: See Sig Join Date: Feb 2007 Location: Lawrenceville, NJ iTrader: (8)	^ most posts Ive ever seen in the same minute... __________________ 13 HD FatBob 17 A4 Glacier/Black 1st Edition/Pre+/Sport/EurocodeTMD/Racechip 16 S6 (gone),14 S6 (gone),14 S6 (gone),13 S6 (gone),10 S4 (gone) 07 335i(gone)
	Appreciate 0 Quote

01-03-2008, 09:30 PM	#7
SLCGoonski Brigadier General 58 Rep 4,221 Posts Drives: 2014 F31 Estoril MSport Wagon Join Date: Dec 2007 Location: SLC, UT iTrader: (4)	just had mine on a lift yesterday...still working on finding some snow tire rims. Can see the little valve really easy. Amazing all the little things you'd never notice on these cars. __________________ SLC Goonski 14 F31 MSport Wagon 08 335i e90...sold
	Appreciate 0 Quote

01-05-2008, 12:52 AM	#10
Lucky Song Private 5 Rep 58 Posts Drives: 2007 metallic blue! Join Date: Sep 2007 Location: n.j iTrader: (0)	why bmw 335i coupe make a butterfly valve? what does butterfly valve do in the left side of exhaust? thanks if anyone can provide me a answer info!
	Appreciate 0 Quote