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Thread: 2 Bar OS...Change my mind

  1. #1
    Tuner Kfred 513's Avatar
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    2 Bar OS...Change my mind

    Whats up guys. I am considering making the jump to the 2 Bar OS on my 2006 Z06. I'm looking to get some opinions from people that have used the 2 Bar OS to see if you think its worth the upgrade. My short term plan for the car is to add Meth injection. My heads are milled .020" and i only have 91 OCT. I can only run 17 deg of timing before i start picking up some KR. Hoping the meth will let me get above 20deg in this hot Vegas air. Long term goal is to go with a centrifugal charger. Do you find the true VE table easier to dial in vs the VVE? I've looked around a bit, but havent seen many topics discussing pros vs cons of the 2 bar system.
    2006 Z06, AHP stage 4 Heads milled .020", Superbee 103 Intake, RPM B3 Cam, Billy Boat Catless Headers, X-pipe, Alky Control Meth Injection

  2. #2
    Tuning Addict 5FDP's Avatar
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    If the computer has it and you want to run boost, it's worth the upgrade. It makes tuning the new VE faster because it more like a regular VE instead of the VVE.
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  3. #3
    Tuner Kfred 513's Avatar
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    my ECM does have the 2 bar option. The regular VE table is one of the main selling points for me. Ive spent hours reading about GMVE and how to populate the new empty VE table. For the life of me i cant figure out the Units for the GMVE parameter. I have read every thread discussing it, and even gone through the paper RHS wrote. Do you have any insight on the correct unit of measure?
    2006 Z06, AHP stage 4 Heads milled .020", Superbee 103 Intake, RPM B3 Cam, Billy Boat Catless Headers, X-pipe, Alky Control Meth Injection

  4. #4
    Advanced Tuner
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    There are no cons to the 2 bar upgrade.. For boost you really should do it. Easier to dial in the VE, and if I remember right it extends your maf table, which you will need.
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  5. #5
    Senior Tuner Ben Charles's Avatar
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    I always upgrade to 2 bar even in MAF mode... get the fan temp table added too along with mentioned above

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