Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E70) Forum
Fluid Motor Union
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #11  
Old 12-01-2012, 07:14 PM
ard ard is offline
Member
 
Join Date: Mar 2006
Location: Sierra Foothills, California
Posts: 5,596
ard is on a distinguished road
Quote:
Originally Posted by Penguin View Post
I've found this to provide an effective performance boost:



Sorry, I just couldn't resist...

Oh, now you're talking clip on mods?!?!?
Reply With Quote

Sponsored Links

  #12  
Old 12-01-2012, 10:33 PM
Member
 
Join Date: May 2005
Location: South Florida
Posts: 328
TahoeM3 is on a distinguished road
Quote:
Originally Posted by JCL View Post
I can't imagine a sprint booster being considered a performance mod. It is a gas pedal mod, not a performance mod. If you want to change the pedal action, great.

A blow off valve? Seriously? If I heard one on the street I wouldn't be able to prevent myself laughing. I looked it up to see who was selling BOVs for BMW models and saw an advertisement that stated "has the ever-popular whoosh sound". Honestly. OK. Do what you like, it is your car.
If that makes you laugh, then you should listen to an X5M. It has loud BOVs.

They may sound silly, but they do make a difference. The reason that certain ones make noise is that they hold and release boost better. The BOVs on the 50i don't hold as much boost, so they don't make a funny sound when the boost is released...that fits for a less extreme car. For the more performance-focused M they used different BOVs because of higher boost levels...hence the characteristic "cooing" sound. For someone with a tuned 50i making more boost, upgrading the BOVs would likely make a noticeable difference, as the stock 50i valves aren't meant to handle that level of boost without leaking.
__________________
2017 Nissan GTR Red/black - Tune/midpipe
2013 BMW X5 50i M-sport Alpine white/black - Dinan stage 1
2016 Jaguar F-Type R Gray/red
Reply With Quote
  #13  
Old 12-01-2012, 11:05 PM
JCL's Avatar
JCL JCL is offline
Premier Member
 
Join Date: Mar 2005
Location: Vancouver, Canada
Posts: 11,853
JCL will become famous soon enoughJCL will become famous soon enough
Quote:
Originally Posted by TahoeM3 View Post
If that makes you laugh, then you should listen to an X5M. It has loud BOVs.
Apparently not loud enough.

http://www.xoutpost.com/bmw-sav-foru...bovs-x5ms.html

The ones that sound laughable IMO are the ones that vent to atmosphere instead of the exhaust.
__________________
2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver

2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue
Reply With Quote
  #14  
Old 12-02-2012, 10:48 PM
Member
 
Join Date: Nov 2012
Location: Alberta Canada
Posts: 187
Sylvan Lake V35 is on a distinguished road
Reading this thread is a little confusing to help clear a couple things up. There are two types of blow off valves (BOV) either vent to atmosphere or air recirculated pre-turbo, a by pass valve (BPV) is typically on a roots or eaton style supercharger and is not the same as it allows air to bypass the supercharger when in vacuume.
It's a horrible idea to vent to atmosphere on a MAF system because the ECU has accounted for that air and added additional fuel for it then when you vent the air the AFR goes rich and can cause hesitation. As everyone pointed out it also sounds foolish. Down pipes are a great way to get more of the turbo Spool or "whistle" in my opinion that is the turbo sound that I was to hear. Another this is hard intake pipes with a cone air filter (cold air intake) will also give the OEM re-circ BOV a louder sound as will an aftermarket re-circ valve i havent taken a look to see what kind of valve it is but typically OEMs use a Bosh valve and Samco and Go Fast Bits make direct bolt on replacments for bosh valves they wont hurt your performance and will be slightly louder if that's what you dream about.

Last edited by Sylvan Lake V35; 12-02-2012 at 11:23 PM.
Reply With Quote
  #15  
Old 12-03-2012, 12:49 AM
Member
 
Join Date: Dec 2010
Location: ny
Posts: 646
jeremym is on a distinguished road
Quote:
Originally Posted by ard View Post
Oh, now you're talking clip on mods?!?!?
For some reason, I actually could see/hear ard getting pissed about that. Obviously he wasn't, but still, the thought was funny.
Reply With Quote
  #16  
Old 12-06-2012, 05:28 AM
huntertec's Avatar
Member
 
Join Date: Nov 2010
Location: australia
Posts: 150
huntertec is on a distinguished road
Diesel mods..

I transformed my diesel X by having the ECU remaped and modified the exhaust to relieve back pressure, also removed the heavy sock off the air filter. End result 203kw (276 HP ) 615nm (452 fp torque ) more than enough for the lighter E53. The company that organised the remap on my car through a German tuner told me for a 40d, a stage 2 tune will achieve 280 kw (380 hp ) 740 nm ( 544 fpt ) with that tune your vehicle would be a rocket ship, then an exhaust mod and your away. My X has been extensivley modified with suspension, wheels, big brake kit, flares, spoilers, etc, all of the changes have been carefully thought out, and all have delivered a good end result. Their too nice a vehicle to mess up. Just my thoughts.
Reply With Quote
  #17  
Old 12-06-2012, 07:23 PM
X5X's Avatar
X5X X5X is offline
Member
 
Join Date: Apr 2009
Location: London/Belgrade
Posts: 650
X5X is on a distinguished road
Quote:
Originally Posted by huntertec View Post
I transformed my diesel X by having the ECU remaped and modified the exhaust to relieve back pressure, also removed the heavy sock off the air filter. End result 203kw (276 HP ) 615nm (452 fp torque ) more than enough for the lighter E53. The company that organised the remap on my car through a German tuner told me for a 40d, a stage 2 tune will achieve 280 kw (380 hp ) 740 nm ( 544 fpt ) with that tune your vehicle would be a rocket ship, then an exhaust mod and your away. My X has been extensivley modified with suspension, wheels, big brake kit, flares, spoilers, etc, all of the changes have been carefully thought out, and all have delivered a good end result. Their too nice a vehicle to mess up. Just my thoughts.
Yea, those are the figures I heard I just need to find a shop in London that can achieve this kind of HP gain with the ECU, and I'm still deciding on the exhaust.
__________________
Current

2018 F85 X5 M - Individual

2012 E70 xDrive35d - 0km

2002 E53 4.6is - DINAN

Past

2002 E53 3.0d Sport

2007 E70 3.0sd

2008 E70 3.0is M-Sport

2008 E70 3.0d

2008 E70 X5 M

2011 E70 xDrive40d

2013 E70 xDrive40d
Reply With Quote
  #18  
Old 12-06-2012, 11:11 PM
huntertec's Avatar
Member
 
Join Date: Nov 2010
Location: australia
Posts: 150
huntertec is on a distinguished road
Remap

Try POWERS 1 on the Forum, I haven't spoken to him for a while, I'm sure he is still around, he knows his craft well. I've been assured these figures are a safe acheivement. The 40d has had extensive engine upgrades over the 3.0d. Good luck with it.
Reply With Quote
  #19  
Old 12-08-2012, 02:15 AM
ard ard is offline
Member
 
Join Date: Mar 2006
Location: Sierra Foothills, California
Posts: 5,596
ard is on a distinguished road
Quote:
Originally Posted by X5X View Post
Yea, those are the figures I heard I just need to find a shop in London that can achieve this kind of HP gain with the ECU, and I'm still deciding on the exhaust.
Does Sal with Evolve Automotive work on diesels? They are in your neck of the world, AND Id trust them to do anything....
Reply With Quote
  #20  
Old 12-08-2012, 08:54 AM
X5X's Avatar
X5X X5X is offline
Member
 
Join Date: Apr 2009
Location: London/Belgrade
Posts: 650
X5X is on a distinguished road
Quote:
Originally Posted by ard View Post
Does Sal with Evolve Automotive work on diesels? They are in your neck of the world, AND Id trust them to do anything....
Yes, they are not far from me, about a 30 min drive. What do they do other than ECUs?
__________________
Current

2018 F85 X5 M - Individual

2012 E70 xDrive35d - 0km

2002 E53 4.6is - DINAN

Past

2002 E53 3.0d Sport

2007 E70 3.0sd

2008 E70 3.0is M-Sport

2008 E70 3.0d

2008 E70 X5 M

2011 E70 xDrive40d

2013 E70 xDrive40d
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 04:44 PM.
vBulletin, Copyright 2019, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.