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  1. #1
    fussy1's Avatar
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    Flat spot 08 SHO

    Hi Guys my brothers sho has a R&D power shot and riva air, the prob is it has a huge flat spot in the mid range, done all the norm things like plugs etc but no diff, it seems to be getting worse, slack at the top end as well. Any ideas


  2. #2
    im going to assume your brother has a stock ecu and running stock boost ? if it is take off the powershot.you dont need it and those things never seem to work right.if hes running a bit more boost run a boost clamp and dail in with a fuel regulator or better yet get an aftermarket ecu to get your afr in the ballpark then adjust with a regulator if neccesary.

  3. #3
    fussy1's Avatar
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    Yep stock ecu and boost, Thanks

  4. #4
    nicjak's Avatar
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    yep throw the powershot i bet someone didnt know what they were doing with it..

  5. #5
    fussy1's Avatar
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    Took off powershot and problem gone??

  6. #6
    tadda !

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