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Thread: Buick 215 Help, Some Small Issues

  1. #11

    Default Buick 215 Help, Some Small Issues

    based on the decel popping thread, I am going to try to drop my PV to 16ish and see what that does. Sounds like I might be able to raise the PS some as well.

  2. #12

    Default Buick 215 Help, Some Small Issues

    I would set PS to 25% and see if the issue goes away for acceleration. If that doesn't work a PS by 27% will probably fix it. PV of 17% might be a good starting point too.

  3. #13

    Default Buick 215 Help, Some Small Issues

    Thanks, will do. Acceleration is fine, just that part throttle/cruise thing is annoying. As soon as it transitions to actual acceleration it is smooth and responsive. I will tweak it tonight and drive it tomorrow to see how it does.

  4. #14

    Default Buick 215 Help, Some Small Issues

    How much adjustment do you have on the front and rear throttle blade screws?

    How much does the IAC fluctuate when coming to a stop?

  5. #15

    Default Buick 215 Help, Some Small Issues

    They are about 1/4 turn in from where the blades start to move. Any more and the idle was way too high. IAC is zero with a warm idle. Haven't had a copilot to watch IAC when coming to a stop

  6. #16

    Default Buick 215 Help, Some Small Issues

    erik, please post all of your current Initial and Advanced setup settings.

  7. #17

    Default Buick 215 Help, Some Small Issues

    Cam: Street/Stock

    Idle Target-975

    AF: 14.3, 14.1, 13.5

    Timing: Idle: 1075 Total:2250

    Idle ADV:12

    Total:34

    Vacuum:5, Ported

    PS:16

    PV:25

  8. #18

    Default Buick 215 Help, Some Small Issues

    Still fires up nice. After the idle comes down, it is surgey until it warms up. I have noticed that the IAC is between 15 and 35 at about 150degree water temp. I see the MSD moving timing to compensate for idle from 7 to 17 degrees (idle timing set at 12) . Once it gets to 180degrees, the IAC stays around 0 and the MSD uses timing to keep the idle close. AFRs stay pretty close. When it surges and tries to stall, I see AFR go lean and timing swing around and it will catch it most times if the temp is anywhere north of 100 degrees or so.



    Would I benefit from less initial timing and more open throttle blades? It dawned on me that I could probably get to the target idle RPM this way also. Thoughts, thanks!!

  9. #19

    Default Buick 215 Help, Some Small Issues



    Are your current PV and PS settings reversed?

  10. #20

    Default Buick 215 Help, Some Small Issues

    yes, sorry! PV is 16, PS is 25

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