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 8 of 8

Thread: 5235231 injector offset

  1. #1
    Electronic Ignition! Snowwebs's Avatar
    Join Date
    Feb 2019
    Location
    Ogden Ut.
    Posts
    18

    Question 5235231 injector offset

    Anyone have the offsets for red/blue 5235231 80 pph injectors?
    I swapped them in as a replacement for the pink/purple 17104288 46 pph ones after a stroker build.

  2. #2
    Super Moderator dave w's Avatar
    Join Date
    Feb 2011
    Posts
    4,191
    The link below has .bin file AFTK which should have the 5235231 Injector Offsets. The link below also has the TunerPro $42 .xdf definition for the AFTK .bin file.

    http://www.gearhead-efi.com/Fuel-Inj...Information-42

    dave w

  3. #3
    Electronic Ignition! Snowwebs's Avatar
    Join Date
    Feb 2019
    Location
    Ogden Ut.
    Posts
    18
    Thanks so much Dave!!, I believe that is just what I needed. I figured the information was on here some where I just could not find it.

  4. #4
    Electronic Ignition! Snowwebs's Avatar
    Join Date
    Feb 2019
    Location
    Ogden Ut.
    Posts
    18
    OK so I ran $42-1227747-V5.9.3 to see the bin, I didn't see injector offset, but I did find injector correction multiplier. do I just use that table somehow to modify mine?
    I'm running - Advanced $31 TP5 v250, a BMHM bin file on a 7427.
    Attached Images Attached Images
    Last edited by Snowwebs; 07-11-2019 at 08:53 AM.

  5. #5
    Super Moderator dave w's Avatar
    Join Date
    Feb 2011
    Posts
    4,191
    The injector parameters $42 vs. $31 is not a direct crossover. Maybe the early 93 $31 7.4 liter injector parameters will get you close enough to tune, just use the 5235231 injector flow in the $31 .bin file.

    17084304 - Black / Blue - 74pph - 7.4L / 454 - 91-93

    5235231 - Red / Blue - 80pph - 7.4L / 454 - 88-90

    dave w

  6. #6
    Electronic Ignition! Snowwebs's Avatar
    Join Date
    Feb 2019
    Location
    Ogden Ut.
    Posts
    18
    I thought the $31 mask was only used in 95's?
    I found a 7.4 bin for an $0E mask but it had the same offsets as my $31, from what I can tell the earlier 7.4 were either a $42 $4f $99 or a $85 all of which do not look to crossover an offset to a $31.
    I did find a "93 stage 1, 7.4" (probably one of the Harris chips) but it showed bad data in $31, $0D and $0E masks.
    I cant find any bin for an early 93 $31 7.4.
    but I'm pretty new to all this so I may just not know where to look?

    Thank you so much for your help.
    Ken

  7. #7
    Fuel Injected!
    Join Date
    Nov 2014
    Age
    34
    Posts
    33
    I never did change mine because of this exact issue. I don't have a clue as to how to correlate the tables from $42 to usec values.
    1995 K1500, Cadillac 500 TBI with 4L80E swap.

  8. #8
    Electronic Ignition! Snowwebs's Avatar
    Join Date
    Feb 2019
    Location
    Ogden Ut.
    Posts
    18
    Well that's a little discouraging!! LOL.
    I can drop ten psi of fuel pressure with the swap, but tuning has been interesting. BLM numbers never really calms down.

Similar Threads

  1. 95 lt1 injector offset questions
    By Mr.owl in forum GM EFI Systems
    Replies: 56
    Last Post: 02-10-2019, 04:10 PM
  2. Injector offset vs battery voltage
    By 1BadAction in forum TunerPro Tuning Talk
    Replies: 0
    Last Post: 11-29-2016, 04:41 PM
  3. Injector Offset Adder - Clarification
    By Terminal_Crazy in forum TunerPro Tuning Talk
    Replies: 9
    Last Post: 02-04-2016, 07:04 PM
  4. Injector offset
    By tedjan in forum TunerPro Tuning Talk
    Replies: 2
    Last Post: 02-07-2015, 12:59 PM
  5. Injector Offset/Latency Chart Link
    By lightning-jr in forum Fuel Injection Writeups Articles and How to New and Old
    Replies: 1
    Last Post: 01-25-2012, 05:18 AM

Tags for this Thread

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
  •