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Thread: GTO 2 Bar Speed Density Setup For Fan Desired % Tstat Correction

  1. #1
    Tuner in Training cburb88's Avatar
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    GTO 2 Bar Speed Density Setup For Fan Desired % Tstat Correction

    I had the front of the engine apart anyways so figured id throw in a 180 tstat to replace the 187, my OS is already a 2 bar speed density setup so i thought it was supposed to have the lower fan temp settings under Desired % vs ECT but it starts at 192 like factory, not sure what im missing here thought the axis should start at 163 with a 2 bar os.
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    06 GTO LS3 416-Callies Compstar Crank\Rods-SRP Pistons-All ARP-93/E-85-11.28:1 CR-Johnson Lifters-Steve Morris/Trend Pushrods-Comp Rockers- BTR .685 Spring Kit-Manley Valves-SPS Haymaker Heads-Ed Curtis Spec CompCams 646\616 254\240 115-DW 300-Return Fuel System-Aeromotive FPR-Deka 80s-NW102-Holley Sniper low pro-SLP 25% Underdrive Pulley-Melling 10-296-Kooks 1 7\8, Magnaflow Comp 3"-Duspeed OTR-Mike Norris/Earls Catch Can-Earls 260GPH Fuel Filter-Revshift Mounts.

  2. #2
    Tuning Addict blindsquirrel's Avatar
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    That file does not have the 2bar applied.

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    hit apply 2 bar os. save file. close file. re open file. edit and then write entire to put the PCM into custom OS

  4. #4
    Tuner in Training cburb88's Avatar
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    Shit im an idiot i thought it was displayed up in that corner basically saying it was already applied, didnt realize it had to be clicked on then applied, my car is speed density though. Done, i believe changing the 3 map characteristics back to stock is all else i needed to do, unless i actually had a 2 bar installed that is, thanks guys. Any recommendations on how to ramps the fans in by % with a 180 stat?
    06 GTO LS3 416-Callies Compstar Crank\Rods-SRP Pistons-All ARP-93/E-85-11.28:1 CR-Johnson Lifters-Steve Morris/Trend Pushrods-Comp Rockers- BTR .685 Spring Kit-Manley Valves-SPS Haymaker Heads-Ed Curtis Spec CompCams 646\616 254\240 115-DW 300-Return Fuel System-Aeromotive FPR-Deka 80s-NW102-Holley Sniper low pro-SLP 25% Underdrive Pulley-Melling 10-296-Kooks 1 7\8, Magnaflow Comp 3"-Duspeed OTR-Mike Norris/Earls Catch Can-Earls 260GPH Fuel Filter-Revshift Mounts.

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  6. #6
    Tuner in Training cburb88's Avatar
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    Lol thats on the old os my chart now starts at 163 instead of 192
    06 GTO LS3 416-Callies Compstar Crank\Rods-SRP Pistons-All ARP-93/E-85-11.28:1 CR-Johnson Lifters-Steve Morris/Trend Pushrods-Comp Rockers- BTR .685 Spring Kit-Manley Valves-SPS Haymaker Heads-Ed Curtis Spec CompCams 646\616 254\240 115-DW 300-Return Fuel System-Aeromotive FPR-Deka 80s-NW102-Holley Sniper low pro-SLP 25% Underdrive Pulley-Melling 10-296-Kooks 1 7\8, Magnaflow Comp 3"-Duspeed OTR-Mike Norris/Earls Catch Can-Earls 260GPH Fuel Filter-Revshift Mounts.

  7. #7
    Tuning Addict blindsquirrel's Avatar
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    Just copy the values from the stock table (the group of cells, 25-49-49-51-51-91) and paste them in somewhere to the left. Adjust to suit.

    Look at the State vs Desired table to figure out what those numbers in the Desired vs ECT table really mean (no, it's not fan speed in percent). Over 50 turns fans on low speed (state 0->1), over 90 turns on high speed (state 1->2). Below 50 changes from high down to low (state 2->1), and 25 turns fans off (state 1->0). They're just relay controlled and either on or off. Entering '51' results in the same fan speed as '59' or '73' or '89'.