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  1. #1

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    Feb 2007
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    '06 w Xcharger and Riva ECU Running Lean

    I thought I'd be OK with this setup but AFR (and the plugs) say I'm running on the lean side. I do have an RRFPR currently set at 58 with the boost line disconnected, but now I'm wondering if I'm exceeding my stock fuel pump capabilities? It feels good running out to 8340 on the tach but I obviously need more fuel. Any thoughts?


  2. #2
    Eric Ocman's Avatar
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    Aug 2008
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    Cataula, Georgia, United States
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    Your pump is fine. Connect your boost line to a reference point on the manifold and you will be fine bro. After that see where your AFRs fall.

  3. #3
    formerly Gold06RXP Turbo Nick's Avatar
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    May 2007
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    What is your AFR?

  4. #4

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    Feb 2007
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    it's approaching 13:1, I'm going to have it out again on Friday will do more testing then

  5. #5
    "Hustler" Inkaddict's Avatar
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    Quote Originally Posted by sy34010 View Post
    it's approaching 13:1, I'm going to have it out again on Friday will do more testing then
    At what rpm's? If your running 13:1 afr in boot your gonna burn a valve up quick,

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