grind sound after installed down pipe

Mike@N54Tuning.com · 12-06-2009, 04:00 PM

Quote:

Originally Posted by luca335i

My buddy did it. Usually he's bang on. I'm fixing it on monday. Ill call u Monday Andrew.

That explains it

Go to Bimmersport as I have had Charlie install at-least 10 sets for my customers and he is bang on all the time.

Mike

ho_grayson · 12-06-2009, 07:31 PM

any stores you recommand in gva?

Quote:

Originally Posted by Mike@N54Tuning.com

That explains it

Go to Bimmersport as I have had Charlie install at-least 10 sets for my customers and he is bang on all the time.

Mike

grnrg · 12-07-2009, 04:53 AM

Some of us don't live in the US...
So, where to look for contact between the DPs?

Kevin@AKMotorwerk · 12-07-2009, 06:12 AM

Quote:

Originally Posted by grnrg

Some of us don't live in the US...
So, where to look for contact between the DPs?

the three main sections to look for is next to the oil pan, there is a bolt that is close, but it clears with proper install, also between the two dps on the exhaust flange, usually even if they are touching they dont produce any noise, and 3rd is the stock dp hanger bracket, 3" dps dont use it and it needs to be moved or the new dp's will hit it all the time.

grnrg · 12-07-2009, 07:04 AM

I'll give it a try!
thank you!

Mike@N54Tuning.com · 12-07-2009, 09:09 AM

Quote:

Originally Posted by grnrg

Some of us don't live in the US...
So, where to look for contact between the DPs?

Call Andrew.. Just get a phone card and make the call

He is an expert and has seen it all and should be able to help. There is not reason there should be any vibration, noise, etc. as we've sold hundreds of these pipes with no issues, and whenever an issue comes up its install related as there isn't much room and your tolerances are tight.

Mike

luca335i · 12-07-2009, 11:42 PM

Rattle gone but the dps are sitting real close to eachother. Not touching but almost. Is this still normal?

ar design · 12-07-2009, 11:52 PM

Quote:

Originally Posted by luca335i

Rattle gone but the dps are sitting real close to eachother. Not touching but almost. Is this still normal?

Yeah. Clearances on these things is TIGHT. As long as there is no noise or rubbing, you should be A-OK! BTW, sorry I missed your call, was buried in the shop behind a welding helmet. Do you still need a call back?

luca335i · 12-08-2009, 12:16 AM

No worries. Ill call you tomorrow. Just making sure it was ok that clearance was ok. My tech said it was the best he could do. I will Post up a sound clip tomorrow. Im hearing no more rattle but a slight vibration at idle that comes and goes. Plus Im hearing the turbos spool so much more comapred to my UR which is nice. Thanks Andrew. My car sounds kinda like this now.

ho_grayson · 12-20-2009, 01:44 PM

the other store took a look the underneath of car and said the only solution is to heat up pipe and modify areas where close to body frame( causes noise). i wonder if it will cause different pressure between two pipes. they said it wont because only a little modification. is this common? why does this ar down pipe need to be modified in order to fit my car?

Gen_E92 · 12-20-2009, 02:50 PM

who installed ur DPs?

cn555ic · 12-20-2009, 03:33 PM

Is this grinding noise you speak of happening also when you turn your wheel and rev the engine in park or does it happen only in D mode? I installed mine and its really tight at some points I see only like 1/4 to 1/8 clearance between the two dps...It has to be precise, and if its not it would definitely make some kind of rattle....I have yet to take out my car from my initial install because my garage is plowed in by snow...I haven't heard any rattles so far from revving the engine to about 3500 rpms in neutral...

stimpy · 12-20-2009, 08:35 PM

Has AR Design made a install document for these pipes yet? Seems like a lot of these problems can be solved with one (ie use extra caution in this part as this will happen...)

Something a guy can print and take to the shop doing the install.

cn555ic · 12-20-2009, 08:39 PM

Quote:

Originally Posted by stimpy

Has AR Design made a install document for these pipes yet? Seems like a lot of these problems can be solved with one (ie use extra caution in this part as this will happen...)

Something a guy can print and take to the shop doing the install.

No they haven't but this OP made one and its as good as it gets even though the install was for RR DPs...

http://www.billswebspace.com/335Riss...wnpipesDIY.htm

12-07-2009, 04:53 AM	#25
grnrg New Member 0 Rep 14 Posts Drives: BMW 335i Join Date: Apr 2009 Location: Athens iTrader: (0)	Some of us don't live in the US... So, where to look for contact between the DPs?
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12-07-2009, 07:04 AM	#27
grnrg New Member 0 Rep 14 Posts Drives: BMW 335i Join Date: Apr 2009 Location: Athens iTrader: (0)	I'll give it a try! thank you!
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12-07-2009, 11:42 PM	#29
luca335i Major 57 Rep 1,193 Posts Drives: 335I Sedan Join Date: Jan 2008 Location: Unknown iTrader: (3)	Rattle gone but the dps are sitting real close to eachother. Not touching but almost. Is this still normal?
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12-08-2009, 12:16 AM	#31
luca335i Major 57 Rep 1,193 Posts Drives: 335I Sedan Join Date: Jan 2008 Location: Unknown iTrader: (3)	No worries. Ill call you tomorrow. Just making sure it was ok that clearance was ok. My tech said it was the best he could do. I will Post up a sound clip tomorrow. Im hearing no more rattle but a slight vibration at idle that comes and goes. Plus Im hearing the turbos spool so much more comapred to my UR which is nice. Thanks Andrew. My car sounds kinda like this now.
	Appreciate 0 Quote

12-20-2009, 01:44 PM	#32
ho_grayson Private First Class 20 Rep 176 Posts Drives: 2008 335i sedan Join Date: May 2008 Location: south surry, B.C. iTrader: (0)	the other store took a look the underneath of car and said the only solution is to heat up pipe and modify areas where close to body frame( causes noise). i wonder if it will cause different pressure between two pipes. they said it wont because only a little modification. is this common? why does this ar down pipe need to be modified in order to fit my car?
	Appreciate 0 Quote

12-20-2009, 02:50 PM	#33
Gen_E92 Brigadier General 118 Rep 3,432 Posts Drives: slow Join Date: Oct 2006 Location: Vancouver iTrader: (17) Garage List 2007 335i [7.80]	who installed ur DPs?
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12-20-2009, 03:33 PM	#34
cn555ic 441 Rep 18,331 Posts Drives: 335i Join Date: Jun 2007 Location: US iTrader: (6)	Is this grinding noise you speak of happening also when you turn your wheel and rev the engine in park or does it happen only in D mode? I installed mine and its really tight at some points I see only like 1/4 to 1/8 clearance between the two dps...It has to be precise, and if its not it would definitely make some kind of rattle....I have yet to take out my car from my initial install because my garage is plowed in by snow...I haven't heard any rattles so far from revving the engine to about 3500 rpms in neutral...
	Appreciate 0 Quote

12-20-2009, 08:35 PM	#35
stimpy Colonel 167 Rep 2,210 Posts Drives: E92 335i Join Date: Feb 2008 Location: Phoenix AZ iTrader: (7)	Has AR Design made a install document for these pipes yet? Seems like a lot of these problems can be solved with one (ie use extra caution in this part as this will happen...) Something a guy can print and take to the shop doing the install.
	Appreciate 0 Quote