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Thread: Issues with XLR-V tune

  1. #21
    Tuner TimC's Avatar
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    D3's STS-V pulley is only 10% overdrive and I'd assume the XLR-V pulley is the same. I see 13psi with my 10% overdrive upper pulley on my STS-V with stock exhaust.
    1971 Corvette-LS3 swap with custom cam. Stainless headers and sheet metal intake built by the owner. 442rwhp.

    2007 STS-V-Billet Precision 67mm turbo swap. 563rwhp@15psi.

    1991 Camaro-6.0 swap with LS6 heads and custom cam. Headers and other swap bits fabricated by myself (wife's car)


  2. #22
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    Did you ever figure out what the problem is? I am in the same boat. XLR-V with the D3 pulley. Moved the kpa tables up in the supercharger tab to 230 and 210. Still only runs up to ~180 kpa. I can't find any more tables to change that make sense of the problem. I'll include the stock tune, since some were asking for it earlier.
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  3. #23
    Tuner TimC's Avatar
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    Quote Originally Posted by BluHawk141 View Post
    Did you ever figure out what the problem is? I am in the same boat. XLR-V with the D3 pulley. Moved the kpa tables up in the supercharger tab to 230 and 210. Still only runs up to ~180 kpa. I can't find any more tables to change that make sense of the problem. I'll include the stock tune, since some were asking for it earlier.
    What was your boost with the stock pulley?
    1971 Corvette-LS3 swap with custom cam. Stainless headers and sheet metal intake built by the owner. 442rwhp.

    2007 STS-V-Billet Precision 67mm turbo swap. 563rwhp@15psi.

    1991 Camaro-6.0 swap with LS6 heads and custom cam. Headers and other swap bits fabricated by myself (wife's car)


  4. #24
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    Not sure, I came in after the pulley has been installed. They did make a couple of pulls stock on a dyno jet and it was like 375. Right now we are about the same number but the graph takes a dive at 5k. The blower is whining like it making some good boost but the numbers are not there. I'm thinking there is a table I'm missing or missing in the software. Tomorrow I may try to turn off the settings where the spark, fuel, and throttle can control the boost and see what happens.

  5. #25
    Advanced Tuner PGA2B's Avatar
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    Also log your boost bypass duty cycle and I bet you see it open when you don't want it to.
    2013 OBM A6 CTS-V Coupe
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  6. #26
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    Quote Originally Posted by PGA2B View Post
    Also log your boost bypass duty cycle and I bet you see it open when you don't want it to.
    I don't see that pid, I do see a boost solenoid control. Which I logged and a few more things Bill recommended. Here is the modified tune, and the log. We are logging the boost on the dyno and it coincides with the hpl.

  7. #27
    Advanced Tuner PGA2B's Avatar
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    Quote Originally Posted by BluHawk141 View Post
    I don't see that pid, I do see a boost solenoid control.
    Sorry, that is what I meant. I am at work and don't have access to my laptop. Did you try the spark, fuel, and throttle disable settings? I want to say there are a few others to maybe try. I will look when I get home. I haven't memorized all the settings...........
    Last edited by PGA2B; 08-28-2012 at 04:38 PM.
    2013 OBM A6 CTS-V Coupe
    Mods: Headers back Billy Boat Exhaust, GripTec 2.65, 8.6 PowerBond Lower, LSX Innovations Solid Isolator, ID850's, NGK TR7IX's, Accel 9070CK Wires, Spectre CAI, SRI Ported Throttle Body, SRI Catch Can, NGK AFRM, 160* T-Stat, 0fx2gv Brick, Hard Line Delete W/3/4" Lines, FB 101 FMIC, Pierberg CWA50, Stoptech Drilled/Slotted Rotors, EBC Redstuff, Cut Stock Springs, Flat Bottom Steering Wheel
    2006 Black Raven STS-V (Traded In)
    Fully Modded: 459RWHP@5888rpm/451lbft@4696rpm

  8. #28
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    Quote Originally Posted by PGA2B View Post
    Sorry, that is what I meant. I am at work and don't have access to my laptop. Did you try the spark, fuel, and throttle disable settings? I want to say there are a few others to maybe try. I will look when I get home. I haven't memorized all the settings...........
    That was what I was going to turn off, till I got a quick reply from Bill about the IAT constant limit being set at 62%. So I changed that to 200%. Made it a bit better but still not as good as stock. There is a cam boost constant at 62% but I don't know what it is and don't want to change something I don't know about.

  9. #29
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    Turning off those three didn't help out...

  10. #30
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    Neither did upping the cam boost constant...

  11. #31
    Advanced Tuner PGA2B's Avatar
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    Look at your scan. At about frame 745 your bypass opens and registers 62% at just about 6K.

    It does not close until frame 866 with the MAP pressure of 26kPa. So something is going on there.
    Last edited by PGA2B; 08-28-2012 at 08:51 PM.
    2013 OBM A6 CTS-V Coupe
    Mods: Headers back Billy Boat Exhaust, GripTec 2.65, 8.6 PowerBond Lower, LSX Innovations Solid Isolator, ID850's, NGK TR7IX's, Accel 9070CK Wires, Spectre CAI, SRI Ported Throttle Body, SRI Catch Can, NGK AFRM, 160* T-Stat, 0fx2gv Brick, Hard Line Delete W/3/4" Lines, FB 101 FMIC, Pierberg CWA50, Stoptech Drilled/Slotted Rotors, EBC Redstuff, Cut Stock Springs, Flat Bottom Steering Wheel
    2006 Black Raven STS-V (Traded In)
    Fully Modded: 459RWHP@5888rpm/451lbft@4696rpm

  12. #32
    Advanced Tuner PGA2B's Avatar
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    I looked at a few of my scans and I see 12psi PRE IC and loose about 2psi through the IC so I register 10psi after the IC. That is with the stock pulley.

    Tim and I did a few runs where I changed my MAP sensor to check the drop across the IC and found just about 2 psi.
    Last edited by PGA2B; 08-28-2012 at 08:46 PM.
    2013 OBM A6 CTS-V Coupe
    Mods: Headers back Billy Boat Exhaust, GripTec 2.65, 8.6 PowerBond Lower, LSX Innovations Solid Isolator, ID850's, NGK TR7IX's, Accel 9070CK Wires, Spectre CAI, SRI Ported Throttle Body, SRI Catch Can, NGK AFRM, 160* T-Stat, 0fx2gv Brick, Hard Line Delete W/3/4" Lines, FB 101 FMIC, Pierberg CWA50, Stoptech Drilled/Slotted Rotors, EBC Redstuff, Cut Stock Springs, Flat Bottom Steering Wheel
    2006 Black Raven STS-V (Traded In)
    Fully Modded: 459RWHP@5888rpm/451lbft@4696rpm

  13. #33
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    We got it ironed out, it turns out that it was the IAT temp set at 62% limiting us. The other issue was I was recommended to take 4* timing out. It turns out it needed 3* more than stock, so that was killing the top end. With the D3 pulley and CAI we made an SAE 400rwhp.

  14. #34
    Advanced Tuner PGA2B's Avatar
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    So what is your psi reading now?
    2013 OBM A6 CTS-V Coupe
    Mods: Headers back Billy Boat Exhaust, GripTec 2.65, 8.6 PowerBond Lower, LSX Innovations Solid Isolator, ID850's, NGK TR7IX's, Accel 9070CK Wires, Spectre CAI, SRI Ported Throttle Body, SRI Catch Can, NGK AFRM, 160* T-Stat, 0fx2gv Brick, Hard Line Delete W/3/4" Lines, FB 101 FMIC, Pierberg CWA50, Stoptech Drilled/Slotted Rotors, EBC Redstuff, Cut Stock Springs, Flat Bottom Steering Wheel
    2006 Black Raven STS-V (Traded In)
    Fully Modded: 459RWHP@5888rpm/451lbft@4696rpm