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Thread: LSJ tuning...

  1. #1

    LSJ tuning...

    just wondering what u guys are setting your WOT timing at? im tuning my buddies 06, he has the Harrop TVS kit with a 3.1" pulley running 15-16psi with full catless exhaust, 80lb injectors. i was kinda thinking 18 max on 93 octane. thanks.

    edit:we are using the computer that came with the kit so a lot of the parameters are already changed, im just dialing in the MAF curve and timing.

  2. #2
    Senior Tuner BackyardTurbo_FTW's Avatar
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    17-18 would be a good place to start. I tuned one with a 2.9 and his peak was 16.5 on pump gas.

  3. #3
    Advanced Tuner
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    I thought the tvs with the 3.1 pushed like 20psi, must have a well ported head and such.

  4. #4
    I thought the tvs with the 3.1 pushed like 20psi, must have a well ported head and such
    i was talking timing not boost, its a stock motor. the absolute map pid reads 30-31 so subtract 14.7 and thats 15-16. he has the 2.9 pulley on the way.

  5. #5
    Advanced Tuner
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    I knew you were talking about timing. I don't have any lsj experiance. my buddy has the tvs on his lsj with the 3.1 pulley and he pushes 20psi. just making statements sorry I'm of no help.

  6. #6
    I am runing my TVS at 18 right now. Thats without exhaust mods. and now that I have meth going in and dual pass and 3in exhaust I will slowly bump timing up to like 25.

  7. #7
    Give it what it can take till knock and then back off a couple. Make sure he uses the same gas as your tuning him on.
    E-85 279.5whp/258tq