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 3 of 3

Thread: How Should a BLM Graph Look when finished tuning?

  1. #1
    Fuel Injected!
    Join Date
    Apr 2015
    Location
    Albuquerque, NM
    Posts
    51

    How Should a BLM Graph Look when finished tuning?

    So after over tuning BLMs the graph looks very spiky, BLMs look good.
    The near ideal graph, low map range don't look right.

    I attached bin file and XDF file (twice) I think those are the files needed.
    Attached Files Attached Files
    1993 Chevy Blazer TBI Vortec long block 5.7
    16168625 BDJZ 46mm TB 18 PSI fuel
    Camshaft, Hydraulic Roller Tappet, Advertised Duration 288/308, Lift .431/.451
    Chevrolet Performance Vortec TBI Intake Manifold
    shorty's, y-pipe and 3" full boar muffler

  2. #2
    Super Moderator dave w's Avatar
    Join Date
    Feb 2011
    Posts
    4,228
    The pictures below are from a similar TBI Vortec 350. The cam and exhaust are not the same, but similar. The throttle body is not the same, factory 670 CFM with 5235231 injectors / stock pressure regulator.

    dave w
    Attached Images Attached Images

  3. #3
    Fuel Injected!
    Join Date
    Apr 2015
    Location
    Albuquerque, NM
    Posts
    51
    Thanks Dave.
    I went back to the original bin I got from you and try again if needed.
    I read from another thread that if the BLMs are with in 6 from 128 they are close enough, so BLMs from 123 to 133 would be good.

Similar Threads

  1. Tuning 85 TPI - Need spark tuning advice
    By BlueCorvette in forum GM EFI Systems
    Replies: 11
    Last Post: 01-25-2017, 07:54 PM
  2. Finished my 747 to 427 pin swap, got a few questions
    By CDeeZ in forum GM EFI Systems
    Replies: 4
    Last Post: 07-05-2012, 02:03 PM
  3. Tunerpro RPM vs MAP graph question
    By S3TPI in forum TunerPro Tuning Talk
    Replies: 5
    Last Post: 06-03-2012, 09:01 AM
  4. Finished my tune....how do i put it on a chip?
    By chevyownz60s in forum TunerPro Tuning Talk
    Replies: 4
    Last Post: 05-12-2012, 08:14 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
  •