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Thread: HUGE Problem after tune

  1. #1
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    Default HUGE Problem after tune

    just when I tune the thing the truck feels real slow off the line which is not suppose to happened. It feels so slow but the weird thing is when looking behind my back everybody seems to be getting farther away, I dont know if it had to do something with the speedometer. How can I fix this??
    Last edited by goldbergv95; September 14th, 2009 at 11:23 AM.

  2. #2
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    Do you have your original tune so we can compare it?
    E85 is NOT flex fuel.

    2003 Chevy S10 4.3L LU3 LS1B Auto
    48 LB injectors
    Race Proven Motors 2114 intake
    T70 turbo.

  3. #3
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    Quote Originally Posted by nevinsb View Post
    Do you have your original tune so we can compare it?
    I had many authorization w/ pcm tune. here is the one before I used the efilive program

    On PCM.tun

    but here is a stock tune that i found from this site and it is not mine

    NormaStock.tun

  4. #4
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    That On PCM.tun file looks fine, cant speak to the speedo section but other than that theres nothing apparently wrong with it. You still have all the TM in the engine on that one and the spark speed limiter is at 108 so you cant go faster than that (max it out).
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  5. #5
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    Quote Originally Posted by ScarabEpic22 View Post
    That On PCM.tun file looks fine, cant speak to the speedo section but other than that theres nothing apparently wrong with it. You still have all the TM in the engine on that one and the spark speed limiter is at 108 so you cant go faster than that (max it out).
    yeah but what about the one on the first post, that was the one i bought from pcm and did some authorization on tires and gear ratio?

  6. #6
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    My suggestion would have been to go down the freeway and record the RPMs at a given speed, reflash the original tune, and see if it was the same RPM/speed, but without the original tune, that will be kind of tough.
    E85 is NOT flex fuel.

    2003 Chevy S10 4.3L LU3 LS1B Auto
    48 LB injectors
    Race Proven Motors 2114 intake
    T70 turbo.

  7. #7
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    Quote Originally Posted by ScarabEpic22 View Post
    That On PCM.tun file looks fine, cant speak to the speedo section but other than that theres nothing apparently wrong with it. You still have all the TM in the engine on that one and the spark speed limiter is at 108 so you cant go faster than that (max it out).
    can you show me where to go to max out my speed limiter? and how much recommended?

  8. #8
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    Two big problems.

    let me explain the whole thing in detail. I just got the pcm4less tune also the eflive tuner and the pcm4less tuner reads the H0101 as 65724 and H0104 as 2637.4. Since I already claim in this tune to have a tire change I also decided to change the tire ratio to see how it goes. I changed my tire ratio from 245/65/17 to 265/35/22 and gear ratio to 3.42 (which is suppose to be this but I saw 3.29) and my H0101 is 58503 and H0104 is 1462.6.

    Basiclly the H0101 and H0104 drop low. when i tried to reflash the updated pcm4less tune the car accelerates very slow. I then reflash pcmforless's tune and it felt a little fast. What is wrong with my updated tune? how did pcmforless get bigger numbers on the H0101 and H0104?

    Also, while doing the reflash above I also reflash with zero TM, the engine down light kept lighting up making my car not acelerate. I cleared all the error codes and it still cant not accelerate. But when I reflash to pcm4less tune it (with TM) it was fine. What is wrong?

  9. #9
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    anyone?

  10. #10
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    Ive got my stock tune file that has the same OS and cal ID as your tune file, its attached. Im not exactly sure after reading all your posts which tune file you actually want to work, I think you want 3tune1.tun to work and Im thinking its not working because your speedometer section is all messed up.

    Ive also attached a mild tune for your TB (02 LL8 tuned), its based completely off my stock tune file so no PCM4Less input or input from your posted tune files. Also its not a full tune, you should flash it and see if there's an improvement then go back and add the PCM4Less tune into it (merge them together). And you can see exactly what Ive done to it by comparing the stock tune file.

    I also changed your speedometer without any problems, Im thinking you're using different units that is messing with your tune. When I put the diff ratio to 3.42 with a tire size of 265/35R22 I get values of: H0101- 123704.41 and H0104- 1921.66 which are reasonable.

    So try my tuned file and the 3tune1_update1 (same as the previous one just updated speedo params) and see if they make any improvement and let us know.
    Attached Files Attached Files
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

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