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  • GregS86
    replied
    Originally posted by bigjae46 View Post

    NIce! Swaintech coated headers?
    Yup.

    Leave a comment:


  • fourmula1
    replied
    Originally posted by paulclaude View Post

    Impressive power - are those stock camshafts?
    Yes, stock, nearly 100k miles on engine and only been open for rod bearings, vanos, and valve adjustments.

    Leave a comment:


  • paulclaude
    replied
    Originally posted by fourmula1 View Post
    I run detuned to 295HP for GTS3 but this is my max power tune.
    2003, 97k miles, A LOT of track hours/miles.
    Karbonius Race CSL Intake
    Status gruppe headers cut band clamped to BW race section 1
    BW race section 2 and 3
    Tilton clutch
    Underdrive pullies

    Suggested he cant get enough fuel to it to push further....at this point it is lines or fuel pump I assume, everything else has been changed or cleaned. Not that I need more for my class.


    Click image for larger version

Name:	Screenshot 2025-05-19 152454.jpg
Views:	146
Size:	54.4 KB
ID:	305694
    Impressive power - are those stock camshafts?

    Leave a comment:


  • bigjae46
    replied
    Originally posted by GregS86 View Post
    EPIC Alpha N tune
    SuperSprint Stepped headers
    3.5" custom exhaust
    4" custom intake with ITG filter
    Tilton clutch/flywheel
    Underdrive pullies


    327WHP, 260WTRQ(#'s are SAE corrected), however this motor will end up detuned for classing purposes.

    Click image for larger version Name:	S54 dyno.jpg Views:	4 Size:	82.2 KB ID:	305676
    Click image for larger version Name:	Cody G exhaust.jpg Views:	4 Size:	177.2 KB ID:	305677


    NIce! Swaintech coated headers?

    Leave a comment:


  • fourmula1
    replied
    Originally posted by BMWfanz View Post

    Do you have AFR installed? Have you measured it on max tune map?
    Just exhaust sniffer while tuning. I think I can view the data in winpep. Epic tune, not concerned.

    Leave a comment:


  • BMWfanz
    replied
    Originally posted by fourmula1 View Post
    I run detuned to 295HP for GTS3 but this is my max power tune.
    2003, 97k miles, A LOT of track hours/miles.
    Karbonius Race CSL Intake
    Status gruppe headers cut band clamped to BW race section 1
    BW race section 2 and 3
    Tilton clutch
    Underdrive pullies

    Suggested he cant get enough fuel to it to push further....at this point it is lines or fuel pump I assume, everything else has been changed or cleaned. Not that I need more for my class.


    Click image for larger version

Name:	Screenshot 2025-05-19 152454.jpg
Views:	146
Size:	54.4 KB
ID:	305694
    Do you have AFR installed? Have you measured it on max tune map?

    Leave a comment:


  • fourmula1
    replied
    I run detuned to 295HP for GTS3 but this is my max power tune.
    2003, 97k miles, A LOT of track hours/miles.
    Karbonius Race CSL Intake
    Status gruppe headers cut band clamped to BW race section 1
    BW race section 2 and 3
    Tilton clutch
    Underdrive pullies

    Suggested he cant get enough fuel to it to push further....at this point it is lines or fuel pump I assume, everything else has been changed or cleaned. Not that I need more for my class.


    Click image for larger version

Name:	Screenshot 2025-05-19 152454.jpg
Views:	146
Size:	54.4 KB
ID:	305694

    Leave a comment:


  • GregS86
    replied
    EPIC Alpha N tune
    SuperSprint Stepped headers
    3.5" custom exhaust
    4" custom intake with ITG filter
    Tilton clutch/flywheel
    Underdrive pullies


    327WHP, 260WTRQ(#'s are SAE corrected), however this motor will end up detuned for classing purposes.

    Click image for larger version  Name:	S54 dyno.jpg Views:	4 Size:	82.2 KB ID:	305676
    Click image for larger version  Name:	Cody G exhaust.jpg Views:	4 Size:	177.2 KB ID:	305677


    Last edited by GregS86; 05-19-2025, 02:09 PM.

    Leave a comment:


  • samthejam
    replied
    Meant to attach this to other post.


    Leave a comment:


  • samthejam
    replied
    Untitled by Sam DaJam, on Flickr

    Nothing crazy
    125k mile S54, no valve adjustment done to my knowledge.

    HTE "canned" Tune
    for these mods:
    Megan Headers
    BW Street/Track Exhaust 3.5"
    BW Silicon Elbow

    It has the stock airbox.
    Original MAF, probably original 02s. Happy with how it's doin.

    Leave a comment:


  • digger
    replied
    Originally posted by bigjae46 View Post

    Yeah but 2-3lbs makes a difference in the big picture. A lb here, a lb there…it all ads up.
    1 part in a 1000 lol

    Leave a comment:


  • bigjae46
    replied
    Originally posted by digger View Post

    it will replace 2-3 feet of single 3.5" with 2-3 feet of dual 2.375" (or whatever it is) which will be maybe 2-3lb so doesnt sifnificantly affect the core weight saving benefit (claimed 62) as the saving is not from piping sizes but lack of cats and lack of big resonator / big muffler but i do know people would be avoiding because of the torque dip
    Yeah but 2-3lbs makes a difference in the big picture. A lb here, a lb there…it all ads up.

    Leave a comment:


  • digger
    replied
    Originally posted by bigjae46 View Post

    I am not worried about that region - track only. I might touch upper 3k a few times but usually it will be on purpose where I stay in a higher gear to deaden the torque because of a bump or tricky corner.

    The BW race is all about weight savings and top end power. I think if you move the merge back it will add unnecessary weight for those who would buy this. You certainly wouldn't put a BW race on for the sound.
    it will replace 2-3 feet of single 3.5" with 2-3 feet of dual 2.375" (or whatever it is) which will be maybe 2-3lb so doesnt sifnificantly affect the core weight saving benefit (claimed 62) as the saving is not from piping sizes but lack of cats and lack of big resonator / big muffler but i do know people would be avoiding because of the torque dip

    Leave a comment:


  • bigjae46
    replied
    Originally posted by digger View Post

    to boost 2.5-4k you could experiment with exactly doubling (or close to it) the current merge distance (which would still be slightly shorter/less than the stock merge distance by looks of it) but it will likely soften 4-5k a bit as a compromise but shouldnt hurt anyting above 5k. its expensive doing custom exhausts and hard to undo , so it depends how much it bothers you for the type of use

    i am suprised nobody as brought something similar to market as a bit less of a compromise and the 6-2-1 is the superior power setup over 6-2-H/X-2 with other advantages to boot
    I am not worried about that region - track only. I might touch upper 3k a few times but usually it will be on purpose where I stay in a higher gear to deaden the torque because of a bump or tricky corner.

    The BW race is all about weight savings and top end power. I think if you move the merge back it will add unnecessary weight for those who would buy this. You certainly wouldn't put a BW race on for the sound.

    Leave a comment:


  • digger
    replied
    Originally posted by bigjae46 View Post
    .

    The dip between 2.5k to 4k...because of the BW race?

    Click image for larger version  Name:	Dyno.png Views:	140 Size:	46.3 KB ID:	301080
    to boost 2.5-4k you could experiment with exactly doubling (or close to it) the current merge distance (which would still be slightly shorter/less than the stock merge distance by looks of it) but it will likely soften 4-5k a bit as a compromise but shouldnt hurt anyting above 5k. its expensive doing custom exhausts and hard to undo , so it depends how much it bothers you for the type of use

    i am suprised nobody as brought something similar to market as a bit less of a compromise and the 6-2-1 is the superior power setup over 6-2-H/X-2 with other advantages to boot

    Leave a comment:

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