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Thread: Tune help please

  1. #1
    Potential Tuner
    Join Date
    Jun 2023
    Posts
    6

    Tune help please

    98 C5 btr stage 3 cam, 243 heads, full exhaust, yank 3600 stall and a 3.42 diff. Can someone take a look at the most recent log and let me know your thoughts? Any help is greatly appreciated. Thanks.Cam Log.hpl

  2. #2
    Senior Tuner
    Join Date
    Mar 2022
    Location
    Indiana
    Posts
    3,443
    Persistent LTFT's. Use scanner to clear them.

    Tune in CL. Don't do that OL tuning crap. Wideband is for PE.

  3. #3
    Advanced Tuner abc's Avatar
    Join Date
    Jan 2024
    Posts
    233
    Idles like an old Farmall tractor that's missing on one cylinder doesn't it? The VE table is probably a mess, along with the BRAF. It's rich more often than not. I'm gonna guess if you look at a plug or two there gonna show it.
    I don't know the specs of that cam, it likely has more than 5 degrees of overlap. Your probably gonna be bettor off in SD and yes, put it back in CL and get the VE table sorted out. Probably gonna need to cap your CL positive comp. to 1% or less to have a decent driver.