Tune VS Catless Downpipes

sickem · 04-20-2012, 04:46 PM

Quote:

Originally Posted by ac_90

its gonna drone like crazy dont do it

get your flamesuit on!

8Batteries · 04-20-2012, 08:06 PM

Just as VRSF DPs are are a healthy medium between racelands and AA AE AP and MS Downpipes, Is there a fairly inexpecnsive quality FMIC?
BTW. DPs came in today. Super excited!

8Batteries · 04-30-2012, 08:59 PM

Ok, Downpipes are in and i am a bit unahppy. Not sure if its an improper install, or i just expected the wrong thing. Under load i hear what sounds a bit like a scratchy rattle (like a rattle snake) and at idle i hear what sounds like flapping or putting like an old car. Any ideas?

Jeff@TopGearSolutions · 04-30-2012, 09:04 PM

That would be wastegate rattle. It's not actually the downpipes that caused it. You always had wastegate rattle but the downpipes allow you to hear it through the exhaust since the catalytic converter is removed and not muffling the sound.

8Batteries · 04-30-2012, 09:06 PM

and the flapping? Any idea?
anyone second on this being wastegate rattle?
and how do i test for wastegate rattle before assume it's that and not an imporper install? Thanks for the quick response jeff

Bme30 · 04-30-2012, 10:37 PM

With downpipes waste gate rattle is more pronounced. But not heard during acceleration. Sounds like your dp might be hitting something from being installed improperly.
Most likely they just need a slight adjustment to fix the position.

As for me I have wg rattle also, but it's only at lower speeds and mostly while crusing in neighborhoods or parking lots in 1st and 2nd.

8Batteries · 04-30-2012, 10:55 PM

I checked out vid's of the wastegate rattle. It sounds almost exactly, like that, cept under load as opposed to when the engine is revving down

8Batteries · 05-01-2012, 06:57 PM

Ok it is sounding soo bad now i am close to just taking the DP's out. The car sounds like total crap and its hard to isolate what it is

robc1976 · 05-01-2012, 11:39 PM

Quote:

Originally Posted by E90Company

Couldn't be more correct.

Ditto, no drone here at all!

robc1976 · 05-01-2012, 11:41 PM

Quote:

Originally Posted by 8Batteries

and the flapping? Any idea?
anyone second on this being wastegate rattle?
and how do i test for wastegate rattle before assume it's that and not an imporper install? Thanks for the quick response jeff

I had terrible ratttle and replace the vacuume lines behind the oil filter, lines to and from the canisters & the PITA actuator lines and rattling is history!

robc1976 · 05-01-2012, 11:43 PM

Quote:

Originally Posted by 8Batteries

and the flapping? Any idea?
anyone second on this being wastegate rattle?
and how do i test for wastegate rattle before assume it's that and not an imporper install? Thanks for the quick response jeff

Have you tried rattle fix on the JB4

Jeff@TopGearSolutions · 05-01-2012, 11:56 PM

Quote:

Originally Posted by 8Batteries

and the flapping? Any idea?
anyone second on this being wastegate rattle?
and how do i test for wastegate rattle before assume it's that and not an imporper install? Thanks for the quick response jeff

Could be your exhaust flap in your drivers side tip. I know PROcede has a good wastegate rattle fix. Jb4 might have adopted this practice too.

robc1976 · 05-01-2012, 11:59 PM

Quote:

Originally Posted by Jeff@topgearsolutions

Could be your exhaust flap in your drivers side tip. I know PROcede has a good wastegate rattle fix. Jb4 might have adopted this practice too.

Very good point, I wish I could just take the that stupid flap out lol!!

8Batteries · 05-02-2012, 06:58 AM

No i havent tried any digital fixes. And the rattle seems to be coming from up near the engine, if i stnad directly behind the car and have someone rev it, the car sounds perfect.

8Batteries · 05-03-2012, 07:58 PM

Idea! Exhaust Leak!

Tiago@VRSF · 05-04-2012, 09:24 AM

Could be. Record a video with your phone and e-mail it to me and I'll share my thoughts

04-20-2012, 08:06 PM	#24
8Batteries Private 3 Rep 56 Posts Drives: E92 2007 335I 6MT Join Date: Dec 2011 Location: Tampa FL iTrader: (0)	Just as VRSF DPs are are a healthy medium between racelands and AA AE AP and MS Downpipes, Is there a fairly inexpecnsive quality FMIC? BTW. DPs came in today. Super excited!
	Appreciate 0 Quote

04-30-2012, 08:59 PM	#25
8Batteries Private 3 Rep 56 Posts Drives: E92 2007 335I 6MT Join Date: Dec 2011 Location: Tampa FL iTrader: (0)	Ok, Downpipes are in and i am a bit unahppy. Not sure if its an improper install, or i just expected the wrong thing. Under load i hear what sounds a bit like a scratchy rattle (like a rattle snake) and at idle i hear what sounds like flapping or putting like an old car. Any ideas?
	Appreciate 0 Quote

04-30-2012, 09:04 PM	#26
Jeff@TopGearSolutions 3474 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	That would be wastegate rattle. It's not actually the downpipes that caused it. You always had wastegate rattle but the downpipes allow you to hear it through the exhaust since the catalytic converter is removed and not muffling the sound.
	Appreciate 0 Quote

04-30-2012, 09:06 PM	#27
8Batteries Private 3 Rep 56 Posts Drives: E92 2007 335I 6MT Join Date: Dec 2011 Location: Tampa FL iTrader: (0)	and the flapping? Any idea? anyone second on this being wastegate rattle? and how do i test for wastegate rattle before assume it's that and not an imporper install? Thanks for the quick response jeff
	Appreciate 0 Quote

04-30-2012, 10:37 PM	#28
Bme30 Major 90 Rep 1,039 Posts Drives: 335i coupe Join Date: May 2010 Location: 'Merika' iTrader: (2) Garage List 2007 335i [0.00]	With downpipes waste gate rattle is more pronounced. But not heard during acceleration. Sounds like your dp might be hitting something from being installed improperly. Most likely they just need a slight adjustment to fix the position. As for me I have wg rattle also, but it's only at lower speeds and mostly while crusing in neighborhoods or parking lots in 1st and 2nd.
	Appreciate 0 Quote

04-30-2012, 10:55 PM	#29
8Batteries Private 3 Rep 56 Posts Drives: E92 2007 335I 6MT Join Date: Dec 2011 Location: Tampa FL iTrader: (0)	I checked out vid's of the wastegate rattle. It sounds almost exactly, like that, cept under load as opposed to when the engine is revving down
	Appreciate 0 Quote

05-01-2012, 06:57 PM	#30
8Batteries Private 3 Rep 56 Posts Drives: E92 2007 335I 6MT Join Date: Dec 2011 Location: Tampa FL iTrader: (0)	Ok it is sounding soo bad now i am close to just taking the DP's out. The car sounds like total crap and its hard to isolate what it is
	Appreciate 0 Quote

05-02-2012, 06:58 AM	#36
8Batteries Private 3 Rep 56 Posts Drives: E92 2007 335I 6MT Join Date: Dec 2011 Location: Tampa FL iTrader: (0)	No i havent tried any digital fixes. And the rattle seems to be coming from up near the engine, if i stnad directly behind the car and have someone rev it, the car sounds perfect.
	Appreciate 0 Quote

05-03-2012, 07:58 PM	#37
8Batteries Private 3 Rep 56 Posts Drives: E92 2007 335I 6MT Join Date: Dec 2011 Location: Tampa FL iTrader: (0)	Idea! Exhaust Leak!
	Appreciate 0 Quote

05-04-2012, 09:24 AM	#38
Tiago@VRSF 2108 Rep 43,350 Posts Drives: F90 M5 Join Date: Dec 2007 Location: Doral, FL iTrader: (99) Garage List 2014 F30 328xi [0.00] 2015 F82 BMW M4 [0.00] 2013 Ducati 1199 Pa ... [0.00] 2008 BMW 335i [0.00]	Could be. Record a video with your phone and e-mail it to me and I'll share my thoughts
	Appreciate 0 Quote