Results 1 to 9 of 9

Thread: M3 e46 low power

  1. #1
    Join Date
    Aug 2018
    Location
    Krupina, Slovakia
    Posts
    3
    My Cars
    M3 e46 coupe 2003

    M3 e46 low power

    Hello, what can cause a performance drop in M3 e46? I bought M3 recently and I was measuring performance and had only 290 hp and 299 Nm, what could it be? the torque was very weak from the lower speed, probably Vanos problem. but did it also reduce power? the car has no oil consumption.

  2. #2
    Join Date
    Aug 2017
    Location
    Menlo Park
    Posts
    87
    My Cars
    '05 ///M3
    Vanos, weak fuel delivery, bad spark, bad fuel, poor reading sensors (maf, o2), many things.

    Sent from my SM-G950U using Tapatalk

  3. #3
    MauiM3Mania's Avatar
    MauiM3Mania is offline Observer/Master Skeptic Moderator
    Join Date
    Jan 2002
    Location
    Central Pacific
    Posts
    10,809
    My Cars
    88M3 99M3 04M3 ITBx16
    I believe 275 - 290 BHP is what you can expect from a stock S54. Of course dynos vary... what were you expecting? Has the output changed since you purchased the car?
    04M3 TiAg 69k slick-top 3 pedal
    99M3 Cosmos 61k S50B32 euro 6Spd

    88M3 AW 43k miles Project FS


    WTB: 3.5" Eurosport/Conforti CAI

  4. #4
    Join Date
    Apr 2004
    Location
    Maryland
    Posts
    865
    My Cars
    2006 Estoril Blue/Cin M3
    What hp were you expecting?

  5. #5
    Join Date
    Aug 2018
    Location
    Krupina, Slovakia
    Posts
    3
    My Cars
    M3 e46 coupe 2003
    The basic power is 252kw / 343PS. I have 213kw / 290hp. Yesterday I changed Vanos. I feel the car is stronger at medium speeds.

  6. #6
    Join Date
    Aug 2017
    Location
    Menlo Park
    Posts
    87
    My Cars
    '05 ///M3
    Quote Originally Posted by Lukki1556 View Post
    The basic power is 252kw / 343PS. I have 213kw / 290hp. Yesterday I changed Vanos. I feel the car is stronger at medium speeds.
    Lol, 290 at the wheels is exactly where you should be on a healthy engine.

    Sent from my SM-G950U using Tapatalk

  7. #7
    Join Date
    Aug 2018
    Location
    Krupina, Slovakia
    Posts
    3
    My Cars
    M3 e46 coupe 2003
    212whp :/ this is problem

  8. #8
    MauiM3Mania's Avatar
    MauiM3Mania is offline Observer/Master Skeptic Moderator
    Join Date
    Jan 2002
    Location
    Central Pacific
    Posts
    10,809
    My Cars
    88M3 99M3 04M3 ITBx16
    Check this site.
    04M3 TiAg 69k slick-top 3 pedal
    99M3 Cosmos 61k S50B32 euro 6Spd

    88M3 AW 43k miles Project FS


    WTB: 3.5" Eurosport/Conforti CAI

  9. #9
    Join Date
    Aug 2017
    Location
    Menlo Park
    Posts
    87
    My Cars
    '05 ///M3
    Feel like you are pulling numbers out of the air. Check what Maui said. You cant compare different units.
    Quote Originally Posted by Lukki1556 View Post
    212whp :/ this is problem
    Sent from my SM-G950U using Tapatalk

Similar Threads

  1. E46 BMW M3 E46 SMG Transmission with Low Miles - Very Clean
    By 1995AVUSM3 in forum Drivetrain & Transmission Parts
    Replies: 19
    Last Post: 08-30-2015, 02:51 PM
  2. E46 FS: 2003 E46 M3 Supercharged LOW Miles FL.
    By Viper3812 in forum 3 series & Z Series
    Replies: 2
    Last Post: 01-26-2012, 06:30 PM
  3. E46 WTT: E46 M3 Exhaust: Agency Power Your stock exhaust + cash
    By BimmerFreak in forum Engines, Performance Parts & Software
    Replies: 4
    Last Post: 12-05-2011, 07:40 PM
  4. E46 E46 M3 AP (Agency Power) Headers
    By Chadillac2000 in forum Engines, Performance Parts & Software
    Replies: 1
    Last Post: 12-02-2011, 08:46 PM
  5. M3 E46 - Low RPM engine rattle - Any ideas?
    By m3604 in forum 2001 - 2006 M3 (E46)
    Replies: 12
    Last Post: 01-31-2011, 09:47 PM

Bookmarks

Posting Permissions

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