1992 E36 325i - Exhaust for supercharged engine?

Notices
 

Thread: 1992 E36 325i - Exhaust for supercharged engine?

Reply to Thread
Results 1 to 6 of 6
  1. 1992 E36 325i - Exhaust for supercharged engine? 
    #1
    BMW Crazed
    Car Details
    captain_chaos's Car Details
    Model of Car:
    325i
    Year of Manufacture:
    1992
    Transmission Type:
    Manual
    Car Body Type:
    Coupe
    captain_chaos's Avatar
    Join Date
    Dec 2008
    Location
    Shiney Row
    Posts
    194
    Thanks
    47
    Thanked 7 Times in 7 Posts
    Hi, I am slowly buildin up the money for the stage one VF Supercharger kit which will only run at 6 psi but I am going to be upgrading the Vortech blower upto around 11 to 14 psi once I'm used to the power of only 6 psi.
    I know that the stage 1 kit does not require any mods apart from what is provided in the kit however what about the exhaust? I still think that the stock M50B25 exhaust will struggle to handle an engine wit 6 psi boost never mind 11 to 14 psi.

    What do people normally run in such applications? Would an exhaust that works fine with 11 to 14 psi forced into the engine be good for 6 psi or even stock exhaust?

    Thanks for reading and waiting for any help
     
     

  2. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  3.  
    #2
    BMW Guru
    Car Details
    mark@vorny.co.uk's Car Details
    Model of Car:
    911 C2S
    Year of Manufacture:
    2009
    Transmission Type:
    Automatic
    Car Body Type:
    Coupe
    mark@vorny.co.uk's Avatar
    Join Date
    Sep 2008
    Location
    Appleby Magna, Derbyshire
    Posts
    6,636
    Thanks
    5,139
    Thanked 3,738 Times in 2,697 Posts
    Anybody able to offer any advice or help ?
    2013, Porsche 911 Carrera 4S, PDK, Sports Exhaust, Chrono, etc, etc

    *removed

    BFUK weekday crew

    PLEASE READ THE POSTING RULES & HOW TO CORRECT THREAD TITLES & THE SELLING RULES
     
     

  4. The Following User Says Thank You to mark@vorny.co.uk For This Useful Post:

    captain_chaos (11-03-2010)

  5.  
    #3
    Doy
    Doy is offline
    BMW Maestro
    Car Details
    Doy's Car Details
    Model of Car:
    E53 X5 3.0d, E46 316ti, E46 323ci, E30 325i
    Year of Manufacture:
    2005, 2001, 1999, 1988
    Transmission Type:
    Auto, Manual, Manual, Auto
    Car Body Type:
    SAV, Compact, Coupe, Convertible
    Doy's Avatar
    Join Date
    Nov 2009
    Location
    Skipton
    Posts
    779
    Thanks
    41
    Thanked 196 Times in 186 Posts
    your car won't necessarily need a cat IIRC. i had a scorpion decat on my e36 m3 which was a lot less restrictive, and RYM had one on his e36 m3 and before that when it was still a 318is.

    he'd be that man to speak to, but i can safely say a scorpion decat sounds amazing and can't be a bad choice for an e36 i don't think.
    2005 E53 X5 3.0d Sport
    2001 E46 316ti se Compact
    1988 E30 325i Convertible
    1999 E46 323ci se Coupe- sold!
    2002 E46 330d se Saloon - sold!
    1995 E36 M3 Coupe - sold!
     
     

  6. The Following User Says Thank You to Doy For This Useful Post:

    captain_chaos (11-03-2010)

  7. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  8.  
    #4
    BMW Master
    Car Details
    markrnorton's Car Details
    Model of Car:
    Z3
    Year of Manufacture:
    1998
    Transmission Type:
    Manual
    Car Body Type:
    Roadster
    markrnorton's Avatar
    Join Date
    Dec 2009
    Location
    UK, Essex
    Posts
    293
    Thanks
    14
    Thanked 166 Times in 108 Posts
    I found after fitting my supercharger the engine ran hot, and once dyno'd i was advised to de-restrict the exhaust.

    I built a 2.5" stainless system with a single box and a sports cat, ran it for a bit, but wasnt quite happy with the routing , so i'm just finishing the second re-work

    however, it did, i'm sure make a difference to the power, it felt far sharper than before and definately ran cooler, on my initial test runs

    once its complete i will get it back on the dyno for a true comparison
    Z3
     
     

  9. The Following 2 Users Say Thank You to markrnorton For This Useful Post:

    captain_chaos (11-03-2010),E36Meerkat (11-03-2010)

  10.  
    #5
    BMW Crazed
    Car Details
    captain_chaos's Car Details
    Model of Car:
    325i
    Year of Manufacture:
    1992
    Transmission Type:
    Manual
    Car Body Type:
    Coupe
    captain_chaos's Avatar
    Join Date
    Dec 2008
    Location
    Shiney Row
    Posts
    194
    Thanks
    47
    Thanked 7 Times in 7 Posts
    Quote Originally Posted by markrnorton View Post
    I found after fitting my supercharger the engine ran hot, and once dyno'd i was advised to de-restrict the exhaust.

    I built a 2.5" stainless system with a single box and a sports cat, ran it for a bit, but wasnt quite happy with the routing , so i'm just finishing the second re-work

    however, it did, i'm sure make a difference to the power, it felt far sharper than before and definately ran cooler, on my initial test runs

    once its complete i will get it back on the dyno for a true comparison
    Yea, that sounds about right, what sort of boost have you been running?

    And I found a good place up in Newcastle near me who will make a full custom system and dont worry its not Power(shi*t)Flow hahah Its AAS performance, they do some serious cars and been quated 400 for a simple, single pipe with no cat system.

    But what about the exhaust manifold? Would mine hack it? I been looking into the 3 ltr M3 headers as I know they normally derestrict even the stock 325 blocks.
    Last edited by xXxStKxXx; 12-03-2010 at 12:18.
     
     

  11.  
    #6
    BMW Crazed
    Car Details
    captain_chaos's Car Details
    Model of Car:
    325i
    Year of Manufacture:
    1992
    Transmission Type:
    Manual
    Car Body Type:
    Coupe
    captain_chaos's Avatar
    Join Date
    Dec 2008
    Location
    Shiney Row
    Posts
    194
    Thanks
    47
    Thanked 7 Times in 7 Posts
    anyone can help please? =]
     
     

Tags for this Thread

View Tag Cloud

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