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FX35 Higher octane gas with +2 timing?

Discussion in 'FX (03-08) - Engine & Drivetrain' started by brown_fv, Aug 13, 2007.

  1. brown_fv

    brown_fv Premium Member Premium

    i was just curious if i have to change the octane of gas im currently using if i decide to increase my timing +2. i completely forgot about this simple yet effective mod...im currently using 91 octane, will that be good enough because the only other alternative is 94 at some stations but its quite pricey...

    thanks.
     

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  2. Krayzie

    Krayzie AĆ©rospatiale

    91 octane should be just fine;)
     
  3. Dr.2K

    Dr.2K iS Doctor on Duty iS VIP

    11,683
    9
    Santa Clarita, CA
    2005 FX45
    Garages:
    1
    Yes, 91 is fine but you would probably see more benefit from 93 or higher. But the price may not justify the higher grade.
     
  4. OP
    OP
    brown_fv

    brown_fv Premium Member Premium

    sounds good. another question...when i go in for service will i have to tell them not to reverse my timing or anything like that? if i decide to reset the ECU will i lose the +2?
     
  5. Dr.2K

    Dr.2K iS Doctor on Duty iS VIP

    11,683
    9
    Santa Clarita, CA
    2005 FX45
    Garages:
    1
    The dealer would probably not know you did the +2 unless they did a complete diagnostic. But if they ever had to do one on your FX then you may want to tell them. It falls within the normal parameters so no warranty issues.

    Resetting the ECU will not reset the +2 so no worries there.
     
  6. OP
    OP
    brown_fv

    brown_fv Premium Member Premium

    sounds perfect. now i just need to find a dealership in the area to do this for me...
     
  7. Dr.2K

    Dr.2K iS Doctor on Duty iS VIP

    11,683
    9
    Santa Clarita, CA
    2005 FX45
    Garages:
    1
    Yea b, that will be the tough part. It may also be as tough to find a dealer that knows what you are talking about :LOL:.