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Thread: Injector offset relation

  1. #1
    Potential Tuner
    Join Date
    Jul 2018
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    Injector offset relation

    So after tuning for some time on an ls7, I have a set of the 65lb FAST injectors ( with no data), eased in on a offset for the injectors that allowed me to get the VE tuning down. Now I have run out of MAF at ~9000 Hz. I have looked for good injector data here and there while settling on a table from FIC. Worked that down slightly. Now the VE table seems manageable, the corrections follow as expected. The other issue has to do with throttle lean spikes. I have a sniper sheet metal intake with a 102mm TB. I have tinkered with the fuel transients, with little results. Could it be that the injector angle on that particular intake will not allow proper enough Fuel-to-Wall impact adjustment? Have attach a run log and tune file. Any ideas would be appreciated4-15-2019-small-pe-good-overall.hpt4-15-2.hpl.

  2. #2
    Advanced Tuner
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    Feb 2015
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    Perth, Australia
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    is this a vac referenced return style system or dead head system?

    your file shows the MAF fail high frequency at 0 Hz?

    try setting etc injector disable to 255 in engine torque management.

  3. #3
    Potential Tuner
    Join Date
    Jul 2018
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    Quote Originally Posted by lukearmstrong1990 View Post
    is this a vac referenced return style system or dead head system?

    your file shows the MAF fail high frequency at 0 Hz?

    try setting etc injector disable to 255 in engine torque management.
    This is a vac referenced return fuel system. I will check those settings, thanks for taking a look at the tune. I appreciate all of the help I can get!