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Need tuning help!

This is a discussion on Need tuning help! within the Computer & Tuning forums, part of the LSx Technical Help Section category; I just finished my 416 stroker build. I havent made any changes to the tune on the computer. I went ...

  1. #1
    Member Blue_01_Z28's Avatar
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    Metallic Blue
    2001 Chevrolet Camaro Z28

    Need tuning help!

    I just finished my 416 stroker build. I havent made any changes to the tune on the computer. I went from a 346 with an erson cam to a 416 stroker, I kept the same cam by the way. It idles fine and throttle response seems good, but at part throttle there is a crackle pop sound that comes from the exhaust at about 25% throttle. Also at idle it shows to be lean on my LC-1 wideband. It runs about 17-18 sometimes tagging 19. It does this when the ECT is about 90 and at idle with the MAP sensor at 62KPa. What table could I change to richen up the mixture across the board at all rpm. At WOT it goes to about 13.5 on the wideband.
    Thanks everyone for your input!

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    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    You should really do a full retune on it, starting with the VE tables then the MAF Calibration.

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    Member Blue_01_Z28's Avatar
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    Metallic Blue
    2001 Chevrolet Camaro Z28

    Well i was hoping some experienced tuners would reply, thats what I want to do I just don't know where to start and the order of what parts of the computer to tune. Idle first mass air second, ve table ect. If one were to tune a car what order and what parts to tweak and what to leave alone. Would anyone be willing to point me in the right direction?

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    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    Google "CPIG's vehicle tuning guide" and print that guide. It'll point you in the right direction

  5. #5
    Member Blue_01_Z28's Avatar
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    Metallic Blue
    2001 Chevrolet Camaro Z28

    Thanks man!

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    '02 WS.6 / '07 Suburban

    Like Cutlass said, there are tuning guides on the internet. I think I downloaded the instructions from ls1tuningguide.com, but they were kind of confusing to a newb like me. Another great resource is the HP Tuners forum on their website. There are links to short videos that take things step-by-step for you. Last thing I'll note are Greg Banish's video and his EFI books, all were great resources that really taught me a lot.

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