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Thread: 3400-3800 ecm

  1. #1
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    3400-3800 ecm

    does anyone know if it is possible to use a 3800 super charged ecm on a 3400???? or can I put a 3800sc tune in a 3400ecm

  2. #2
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    It wouldnt work, too many things about each motor are completely different.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  3. #3
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    do u know any info on the 3400??? I got a custom built 3400 with a big turbo and having maf issues? can we take maf out??? and put a 3bar map in?

  4. #4
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    Quote Originally Posted by skoro View Post
    do u know any info on the 3400??? I got a custom built 3400 with a big turbo and having maf issues? can we take maf out??? and put a 3bar map in?
    No, not in the 3400. What MAF are you running, stock?
    2000 Trans Am WS6

  5. #5
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    Quote Originally Posted by MMGT1 View Post
    No, not in the 3400. What MAF are you running, stock?


    I got a stock one yes? but I am planning on 20-32 pounds of boost??? the motor and trans all built!

  6. #6
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    You'll have to scale the tune to get the MAF to read the upper range of boost(Referring to other thread where I suggested the LS1 MAF) . I was making around 400 with my 14lbs and was 200hz from pegging the LS1 MAF. So, your gonna peg it for sure.... scaling will be necessary! You should hit up Aleromod.com as well and find posts from AleroB888, hes built a nice M90 set up on a 3400 and can give you the short list on scaling a 3400 tune as well. His info on the boost and LS1 MAF is more up to date than me, hes done a lot of work on his in the last year or so.
    2000 Trans Am WS6

  7. #7
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    im going to be using a lq4 6.0l truck maf going to re scale my ecm shortly. been told it will read the boost I need?

  8. #8
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    85mm MAF, yea that just may cover it. You should get the adapter so that you can run the internal IAT sensor that is in it as well. It is a 5 pin to 3 pin adapter, then splits the two pin connector you need to connect the IAT sensor. Does a nice clean job...
    Then, from the repository here, get the 04-06 Escalade stock file. Take the MAF table from there and transfer it to your tune, its a good starting point to get it to run
    2000 Trans Am WS6