Results 1 to 8 of 8

Thread: B3601

  1. #1
    Senior Member
    Join Date
    Jan 2005
    Posts
    155

    Default B3601

    Refer to the Dec.29,2005 2-3 bar tutorial by Ross Myers.

    I just installed this Custom Operating System using 2 bar. It's recommended that I start with a AFR of 11.2 at WOT with 6 lbs of boost.
    Should I change B3601 to a lower AFR then 14.63 such as 11.2
    I set the EQ ratios at 1.0 increasing to 1.06 column 95 and 1.13 to 1.17 under column 100.
    Local fuel is 10% Ethanol. MAF disconnected.

    Thanks, Curt
    99C5, mn6, Vortec T trim, Snow meth injection, AFR 205s, ARP studs,Comp 224*112*+2*.580", YellaTerra RRs, PRC Ti's w/dbls, Supermaxx LTs, No Cats, Corsa Indys, LS6Intk, Hurst, Fikse Aro18"s. Pilot Sports 315/30,265/35, 04ZO6 Shocks Hotchkis bars, EBC YellowStuff pads, SS hoses, LM-1, EFILive, 2002 OS. RPS dual disc Clutch, DTE Strut Brace & output shaft.

  2. #2
    Lifetime Member mr.prick's Avatar
    Join Date
    Nov 2006
    Posts
    3,195

    Default

    {B3601} is the AFR value for EQ/Lambda 1.00 and changing it will have a dramatic effect of fueling.

    That's too low of a value for 10% Ethanol, 14.2 would be more appropriate.
    512k RoadRunner Firmware 12.14R
    FlashScan V2 Bootblock V2.07.04 Firmware V2.07.22 EFILive V7.5.7 (Build 191) V8.2.1 (Build 181)
    LC-1 WBO2

    _________________________________________________

  3. #3
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    27,798

    Default

    I agree on 14.2.

    I haven't done this, but there's a kit that determines the alcohol content of your fuel, it then has a chart showing stoich AFR.

  4. #4
    Senior Member
    Join Date
    Jan 2005
    Posts
    155

    Default

    Quote Originally Posted by mr.prick View Post
    {B3601} is the AFR value for EQ/Lambda 1.00 and changing it will have a dramatic effect of fueling.

    That's too low of a value for 10% Ethanol, 14.2 would be more appropriate.
    Joe and mr, thank you for the reply.

    Using the B3647 table as set on page 10 and applying The EQ ratios of 1.06 at 95 kPa (what ever boost that would be in inches of manifold pressure) would translate to an AFR of 13.4 and the EQ of 1.17 at 1600 rpm and 100kPa would give an AFR of 12.14.
    Close but not what I want to run the engine under boost the first time without damage with my 11.3 to 1 compression ratio.
    Looks like I should change the B3647 table to start higher EQ ratios and earlier.
    I find it hard to think in metric values but I've read that it's better to learn to do so.
    14.2 would be fine until until the boost comes in. Did I understand your answer correctly???

    Thanks, Curt
    99C5, mn6, Vortec T trim, Snow meth injection, AFR 205s, ARP studs,Comp 224*112*+2*.580", YellaTerra RRs, PRC Ti's w/dbls, Supermaxx LTs, No Cats, Corsa Indys, LS6Intk, Hurst, Fikse Aro18"s. Pilot Sports 315/30,265/35, 04ZO6 Shocks Hotchkis bars, EBC YellowStuff pads, SS hoses, LM-1, EFILive, 2002 OS. RPS dual disc Clutch, DTE Strut Brace & output shaft.

  5. #5
    Lifetime Member mr.prick's Avatar
    Join Date
    Nov 2006
    Posts
    3,195

    Default

    You want higher EQ/lower Lambda values under load (especially w/FI).
    Set {B3601} to whatever you're using and use the PE and/or commanded fuel tables for enrichment.

    Don't shortcut with {B3601} to avoid changing the other tables.
    512k RoadRunner Firmware 12.14R
    FlashScan V2 Bootblock V2.07.04 Firmware V2.07.22 EFILive V7.5.7 (Build 191) V8.2.1 (Build 181)
    LC-1 WBO2

    _________________________________________________

  6. #6
    Senior Member
    Join Date
    Jan 2005
    Posts
    155

    Default

    Quote Originally Posted by mr.prick View Post
    You want higher EQ/lower Lambda values under load (especially w/FI).
    Set {B3601} to whatever you're using and use the PE and/or commanded fuel tables for enrichment.

    Don't shortcut with {B3601} to avoid changing the other tables.
    I'll change the B3601 to 14.2. I've modified the A0009 Boost VE table as per Ross's tutorial, page 7. Here, the B0101 Normal VE table 105 column is copied to the A0009 Boost VE table and from the 105 column to the 285 kPa column is increased 300%.

    If you were in my position, would you use this 2-3 bar tutorial or would you go a different route. PM would be appreciated.

    Thanks again for your help. I can't believe how much I've forgotten in 5 years but it's starting to come back.

    Curt
    99C5, mn6, Vortec T trim, Snow meth injection, AFR 205s, ARP studs,Comp 224*112*+2*.580", YellaTerra RRs, PRC Ti's w/dbls, Supermaxx LTs, No Cats, Corsa Indys, LS6Intk, Hurst, Fikse Aro18"s. Pilot Sports 315/30,265/35, 04ZO6 Shocks Hotchkis bars, EBC YellowStuff pads, SS hoses, LM-1, EFILive, 2002 OS. RPS dual disc Clutch, DTE Strut Brace & output shaft.

  7. #7
    Lifetime Member mr.prick's Avatar
    Join Date
    Nov 2006
    Posts
    3,195

    Default

    COS is your best bet.
    You can change the view of these tables to AFR if that's what you are comfortable with.
    512k RoadRunner Firmware 12.14R
    FlashScan V2 Bootblock V2.07.04 Firmware V2.07.22 EFILive V7.5.7 (Build 191) V8.2.1 (Build 181)
    LC-1 WBO2

    _________________________________________________

  8. #8
    Senior Member
    Join Date
    Jan 2005
    Posts
    155

    Default

    Quote Originally Posted by mr.prick View Post
    COS is your best bet.
    You can change the view of these tables to AFR if that's what you are comfortable with.
    Right, I'm using the EFILive COS #02040003.

    Cheers, Curt
    99C5, mn6, Vortec T trim, Snow meth injection, AFR 205s, ARP studs,Comp 224*112*+2*.580", YellaTerra RRs, PRC Ti's w/dbls, Supermaxx LTs, No Cats, Corsa Indys, LS6Intk, Hurst, Fikse Aro18"s. Pilot Sports 315/30,265/35, 04ZO6 Shocks Hotchkis bars, EBC YellowStuff pads, SS hoses, LM-1, EFILive, 2002 OS. RPS dual disc Clutch, DTE Strut Brace & output shaft.

Similar Threads

  1. B3601 value for E10
    By WHYTRYZ06 in forum General (Petrol, Gas, Ethanol)
    Replies: 32
    Last Post: August 27th, 2015, 11:09 PM
  2. B3601 and returning to CL
    By Gregs in forum Gen III V8 Specific
    Replies: 7
    Last Post: April 30th, 2010, 11:48 PM
  3. B3601 equivalent in E38
    By Chalky in forum E37, E38 & E67 PFI ECM's
    Replies: 1
    Last Post: September 7th, 2009, 11:02 PM
  4. Logworks and {B3601}
    By mr.prick in forum General (Petrol, Gas, Ethanol)
    Replies: 2
    Last Post: June 28th, 2009, 05:24 PM
  5. B3601
    By johnv in forum General (Petrol, Gas, Ethanol)
    Replies: 4
    Last Post: November 23rd, 2005, 10:24 AM

Posting Permissions

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