Bringing TBI and Multi Port Fuel Injection to a New Level.     EFI Conversions and Tuning! Seattle to Portland! E-mail Tuning Consultant!
Results 1 to 4 of 4

Thread: LT1 2bar Help

  1. #1
    Carb and Points!
    Join Date
    Mar 2019
    Age
    31
    Posts
    2

    LT1 2bar Help

    Stock 94 z28 auto 42lbs injectors T67 turbo
    Im having issues with her running once the 2bar map is installed.I scaled the VE tables down to half and turned on speed density and she still wont run it will idle for about 15 sec.Needing some help with this was wondering if someone had a 2 bar VE table they could screen shoot or post that would help alot.
    Thanks

  2. #2
    Fuel Injected!
    Join Date
    Mar 2013
    Posts
    1,054
    Start debugging by logging pressure vs pcm map reading. It needs to be linear as much as possible.
    Hook up vacuum first than apply pressure to the sensor, while monitoring pcm data.
    Than you will know if pcm reads correctly the sensor.

  3. #3
    Carb and Points!
    Join Date
    Mar 2019
    Age
    31
    Posts
    2
    You have done this making the 1 bar system see 2 bar?

  4. #4
    Fuel Injected!
    Join Date
    Mar 2013
    Posts
    1,054
    I didn`t but it is the correct way to see how the sensor is scaled within the pcm code. Some kind of custom calibration. If it doesn`t look good or linear enough some rescaling might be needed. There is also some baro corrections, updates that you need to get rid of too.

    You will definitely lose some resolution. Wiring a second map sensor that is used for ve fueling only will be much better approach. Some custom patching will be needed.

Similar Threads

  1. Shopping for COS 2bar, Gen 1, '411- '01 Camaro ECM
    By Jim Blackwood in forum GM EFI Systems
    Replies: 0
    Last Post: 05-09-2020, 09:15 PM
  2. 2000 LS1 Camaro Tune Speed Density / 2bar with TunerCat Question
    By Performance SS in forum TunerCat OBDII
    Replies: 0
    Last Post: 04-19-2016, 07:01 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
  •