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Thread: COS3 OLSD to SemiOLSD

  1. #21
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    Quote Originally Posted by statesman View Post
    Why are you so obsessed with running open loop?
    I don't have an obsession with it. At the time I started, less things interacting seemed to be better.

  2. #22
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    I believe I still have the MAF that came with the Eforce, but it's a Gen4 based maf. Probably not compatible with the Gen3 PCM. Will have to look for it.

  3. #23
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    If you want a really good open loop tune, then you need really good injector data... and very few people have that (just because injectors come with data doesn't mean that the data will be good). Closed loop will clean up any fueling errors and, provided your tune is in good shape to start off with, it has benefits over running open loop.

  4. #24
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    Quote Originally Posted by Jim_PA View Post
    I believe I still have the MAF that came with the Eforce, but it's a Gen4 based maf. Probably not compatible with the Gen3 PCM. Will have to look for it.
    It's preferable to have a MAF with an integrated IAT.... the IAT controls the conversion of desired airflow from mass to volume (complicated, but that's how it is) and proper IATs will give the PCM better idle airflow targeting. Using the heatsoaked IAT sensor in the supercharger means your PCM will have to do a lot of airflow trimming at idle.

  5. #25
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    Quote Originally Posted by statesman View Post
    It's preferable to have a MAF with an integrated IAT.... the IAT controls the conversion of desired airflow from mass to volume (complicated, but that's how it is) and proper IATs will give the PCM better idle airflow targeting. Using the heatsoaked IAT sensor in the supercharger means your PCM will have to do a lot of airflow trimming at idle.
    I could move from the IAT MAP to the IAT MAF, no problem. The IAT portion of the TMAP in the e-force is already calibrated in my tune for the LS3/7 IAT signal. Just not sure about the LS3 MAF sensor being compatible with the Gen3 PCM.

  6. #26
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    It'll work... you just need an adapter.

  7. #27
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    Quote Originally Posted by statesman View Post
    It'll work... you just need an adapter.
    Assuming you mean a physical adapter... -->? https://www.eficonnection.com/home/p...ctor-pigtail-4

  8. #28
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    Yeah, a physical adapter to connect to your LS1 harness. The product you linked to doesn't make it clear if that adapter services both MAF and IAT... just check to make sure the one you get does actually service both.

  9. #29
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    Thank you, will give it a try. --

  10. #30
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    sounds like a plan

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