Turbo Lag?
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Joined: Oct 2007
Posts: 31
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From: Somewhere in Dixie
Would someone please explain just what this is?
I have a 535i built 12/07 and have recently noticed a noise that sounds like pre-ignition when I get on it. Some might describe the noise as birds chirping. Anyhow, the car is running fine but, I just want to be on top of what might be going on. Your comments will be appreciated.
I have a 535i built 12/07 and have recently noticed a noise that sounds like pre-ignition when I get on it. Some might describe the noise as birds chirping. Anyhow, the car is running fine but, I just want to be on top of what might be going on. Your comments will be appreciated.
Contributors
Joined: Mar 2008
Posts: 1,128
Likes: 1
From: Birmingham AL
My Ride: 2010 VW Passat Wagon 2.0l Tsi
Grey/Grey Budapest 18"
Lost to HPFP issues:
08 535i sport pkg
Lost to Dreaded E61 Sun roof leaks:
07 E61 530Xi
checkout my sig...
E90post.com in the turbo section...
BMW has started rolling out the soft ware fix for lag, but it will reintroduce the "Ping ping ping " of the waste gate chatter...
If you have had a HPFP replaced you have been "upgraded" to one of the laggy software revisions....
your 12/07 car originally had like DMS 27.2 or 28.x , so if you have not had to get the DMS upgraded you don't have the laggy software.
Reasons for Upgrades:
fix Waste gate chatter
Fix issues with Turbos
Fix/multiple fixes with HPFP failure
Electronic gremlins
fix injection problems ( usually traced back to HPFP going bad)
Transmission software Upgrade/recall
Sounds like you may have a Knock or an injector going bad not turbo lag... May want to get it hooked up on a GT-1 .
The noise you have described sounds like Waste gate articulator issues... so you can either get the laggy software to "fix" it for about 3-8k ( It will return it has on just about every N54 motor after the "Fix")or just live with it and enjoy low end torque
E90post.com in the turbo section...
BMW has started rolling out the soft ware fix for lag, but it will reintroduce the "Ping ping ping " of the waste gate chatter...
If you have had a HPFP replaced you have been "upgraded" to one of the laggy software revisions....
your 12/07 car originally had like DMS 27.2 or 28.x , so if you have not had to get the DMS upgraded you don't have the laggy software.
Reasons for Upgrades:
fix Waste gate chatter
Fix issues with Turbos
Fix/multiple fixes with HPFP failure
Electronic gremlins
fix injection problems ( usually traced back to HPFP going bad)
Transmission software Upgrade/recall
Sounds like you may have a Knock or an injector going bad not turbo lag... May want to get it hooked up on a GT-1 .
The noise you have described sounds like Waste gate articulator issues... so you can either get the laggy software to "fix" it for about 3-8k ( It will return it has on just about every N54 motor after the "Fix")or just live with it and enjoy low end torque
Senior Members
Joined: Dec 2007
Posts: 538
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From: Western Washington
My Ride: 2008 Space Gray 550i, Light Poplar Wood, Anthracite Head Liner, Sport Package, Sport Automatic Transmission, Cold Weather Package, Front Ventilated Comfort Seats in Black Nasca Leather, NAV, HUD, Active Steering, Comfort Access, Night Vision, Lane Deviation Warning, Active Cruise Control, Heated Rear Seats, Folding Rear Seats, Power Shade w/ Rear Side-Shades, Rear Air Bags, Logic 7, HD Radio, Sirius Satellite Radio, iPod/USB Adapter. Car in BMW Body Shop, estimated completion 01/24/07.
Anyone want to discuss which is better, 535i or 550i?
(Just kidding, guys, gimme a break!)
Cal
(Just kidding, guys, gimme a break!)
Cal
Senior Members
Joined: Nov 2007
Posts: 1,168
Likes: 0
From: Boston, US
Interesting... and concerning...
I have read so many good thing about the twin turbo six. If I believed everything I read it would be the greatest motor ever invented.
Between oil cooler issues, HPFP issues, lag, ping, my old school V8 seems like it's not obsolete yet.
I have read so many good thing about the twin turbo six. If I believed everything I read it would be the greatest motor ever invented.
Between oil cooler issues, HPFP issues, lag, ping, my old school V8 seems like it's not obsolete yet.
Contributors
Joined: Mar 2008
Posts: 1,128
Likes: 1
From: Birmingham AL
My Ride: 2010 VW Passat Wagon 2.0l Tsi
Grey/Grey Budapest 18"
Lost to HPFP issues:
08 535i sport pkg
Lost to Dreaded E61 Sun roof leaks:
07 E61 530Xi
Usually the " Ping-ping-ping " , that a kinda sounds like a bolt bouncing around is a dead give away on an N54 for the waste gates... A tweet- tweet very well could be one of the Fuel pumps ( HPFP or one of the normal ones) or a leak in the boost system.
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