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Thread: Critique me if you would...

  1. #1
    Potential Tuner
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    Jan 2011
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    Critique me if you would...

    Well guys long story short my tuner quit me and I have beenreading and practicing on my own and I think im getting there I just need some insite. I have a customer here that has a 02 corvette with a 408 and a procharged p1sc with an 8lb pulley and roughly a 230/232 cam (cant remember exact numbers). Car right now is making about 560HP but I think its still off hp wise. I am trying to keep it safe but I thought about leaning it out a little more to try and get a little close to the 600 mark. Car starts and idles great and no knock and runs great and WOT. It will still occasionally go into reduced power mode at WOT as well which I cant seem to figure out. Also I cleaned up allot of the idle but every once in awhile the rpm's will dip to 500 if a rev the motor in nuetral. I just wanted to get your guys insight and see if im completely off base. Thanks in advance and please dont be shy! Rip it to peice as I need and want to learn!

    Attachment 28028

  2. #2
    Advanced Tuner 69lt1bird's Avatar
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    Oct 2007
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    Log file.
    Are you using a wideband?
    Engine details.
    Free HP Tuners Beginners Tuning Guide

    LS1 Tuning Guide
    Michigan Snowmobiler

    1969 Firebird: 11.67@114 [email protected] 1/8 1.70 60 ft. EPS cam 234/246 .602.606 114+3, 6.0 LQ4, L92 heads milled 10.5:1, Ported L76 intake, ported 90mm Holley TB, 100mm MAF, FIC Custom injectors, Hooker LT, PYPES dual exhaust with an X pipe, 4L65e with all of the good parts inside, FTI 4000 RPM Stall, 12 bolt with 3.73 gears. HP Tuner tuned by me

  3. #3
    Tuning Addict WS6FirebirdTA00's Avatar
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    That is probably not off a whole lot considering it is a P1SC only at 8 PSI.

    Reduced power is probably a P0121 error, see what the code is.

    69lt1bird is right, we need a lot more info. With more details we can't tell if the timing looks high or low. No real idea on the fueling with a log either.
    Sulski Performance Tuning
    2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
    2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB

  4. #4
    I was going to say it could be a 1514/0068, but someone pretty much maxed that table already.
    Last edited by JoeyJoeJoe; 04-21-2011 at 06:30 PM. Reason: looked at tune in question

  5. #5
    Potential Tuner
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    thank you guys for the reply and I will get you a log in the morning!!

  6. #6
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    Fuel supply


    Thanks,
    Mr. 2008 SS

  7. #7
    Advanced Tuner
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    Quote Originally Posted by Mr. 2008 SS View Post
    Fuel supply


    Thanks,
    Mr. 2008 SS
    Unlikely reason why the car would go into limp mode.
    WS6FirebirdTA00 with the P0121 is more plausible.
    SRE? what codes do you get when going into reduced power mode?