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Thread: Reduced power P1516 P2101 truck 88mm TB car OS 07 CTS-v base file etc scaller maybe?

  1. #1
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    Default Reduced power P1516 P2101 truck 88mm TB car OS 07 CTS-v base file etc scaller maybe?

    Motor is a 2007 lh6 5.3l aluminum block flat top pistons, 243 truck heads, ls3 springs and cam, Brian tooley/comp .80 pushrods, ls2 intake, volant cia with ls7 maf, ls7 lifters, dod deleted. 2007 ctsv 6.0l e67 base OS 58x pcm. T56 trans 88mm Gen IV truck TB.

    I got my low VE, and maf dialed in 90% of the way, thanks to members help on her, pervious thread. But faced with a New issue, this is preventing me from tuning high maf, and PE, seems to come in around 60-70% pedal position, and I get reduced power, and P1516, P2101. I can set P1516 to 60%, but EFi doesn't let me do P2101 (in the salve) Hp tuners can, but that's another 100.00 credit to the competitor, I do own hpt, but prefer to use EFI. Sorta a band aid fix though, lets try to actually fix the problem? Should I try and change the etc scaller, with past experience this can cause a reduced power and pcm processor fault message? Why does a 2006 SSR scaller differ from a 2009 Colorado etc scaller they are the exact same TB 88mm truck gen IV??

    IDK what to set my etc up too? Key one full throttle np, so I think this TB will work isn't it only 2mm smaller? is this really going to make that much difference?
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  2. #2
    Joe (Moderator) joecar's Avatar
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    Are there any tables that show up in the tune file when you connect FSV2 to your PC (i.e. red folders)...?

    ~Moderator~

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    I don't think so? No really sure? what you mean? You guys don't write the salve do you? I just maxed everything I could find related to throttle out, and that fixed P2101 but not P1516, I have hpt tuners version 3, and a cable, but it will cost me 100.00 in credits. They write the salve and you can edit P1516, just like P2101.

    I have a program that will write the salve, if someone can tell me were the P1516 parameters are on the salve, and how to update the checksums, I'd be golden, I can work in hex, and write the salve.

  4. #4
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    P2101 equals PCM, P1516 equals salve its in the 12601915 engine salve, if someone has a AL2, and checksum info please PM me.

  5. #5
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    Quote Originally Posted by joecar View Post
    Are there any tables that show up in the tune file when you connect FSV2 to your PC (i.e. red folders)...?

    ~Moderator~
    only red folders I see regarding throttle are response tables, and I don't see them being the issue?

  6. #6
    Lifetime Member wesam's Avatar
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    I'm fighting the same issue p1516 since 2 months with LS1B
    I did every thing also ordered New boosted NW102 throttle without luck
    It just happened with partial throttle when the turbo spools
    I hope aome body could help us
    EFILive Tuner

  7. #7
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    Ok so playing with mine, and I found key on engine of it even hits reduced power, after rapid pedal movement, trying a different tb!

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    Quote Originally Posted by wesam View Post
    I'm fighting the same issue p1516 since 2 months with LS1B
    I did every thing also ordered New boosted NW102 throttle without luck
    It just happened with partial throttle when the turbo spools
    I hope aome body could help us
    Yours could be converted to cable tb? That would solve it, what os are you running? What pedal? Try a ls7 tb your problem is the boost pressure is probably physically blowing the blade open or shut more, ls7/lsa tb is meant for boost and rotates the other way?

    I have experience wirring 8-6 wire and making non standard tbs work sometimes, it's a physical tps adjustment I make that works.

    Try turning down your boost to bare minimum and see if it still gets p1516, I doubt it will.

  9. #9
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    Fixed set p1516 to 80% with hp tuners, and p2101 to 80% with efi live
    Last edited by 04colyZQ8; March 26th, 2017 at 06:20 PM.

  10. #10
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    Too bad I had to use hp tuners to fix the slave, maybe EFI will add the salve flash and P1516, in the future? I now know the hex address of the P1516 in hex.. wink, wink to a mod

    Could I write a CAX for this? likely not write? because Efi doesn't flash the salve?

    Is this a good thing to do, should I try a lower value, now that I know this works? It went full throttle several times now, no issues. ?

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