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Thread: afr

  1. #1
    it's goin like boeing jdml's Avatar
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    afr

    hi guys i have an fzs with r3 reflash and boosting @ 16 psi. eventually got my afr guage 2 work and its @ 12.5 idal and 10.2 wot do you think it will b ok or would i have 2 fit a powershot.? as i was allways told running a bit on the rich side is better what would you guys think many thanks jay ..


  2. #2
    wow 10.2 is rich, I have a C3 with the R3 and im at 11.9-12.1 at wot around 8350 rpm. What rpm and what other mods do you have???

  3. #3
    it's goin like boeing jdml's Avatar
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    hi mate i have r3 reflash thru hull exhaust riva waterbox 16 psi wheel ggreddy bov watercooled supercharger valve train upgrade riva fuel pressure reg (set to rising rate ) riva power cooler engine cooling upgrade r&d twin prop(repitched) ribbon delete foam removed breather kit .I have seen 9.8 sometimes just for a split second . dont have any issues with the ski so may just leave it as it is what do you think ??

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    Quote Originally Posted by jdml View Post
    hi mate i have r3 reflash thru hull exhaust riva waterbox 16 psi wheel ggreddy bov watercooled supercharger valve train upgrade riva fuel pressure reg (set to rising rate ) riva power cooler engine cooling upgrade r&d twin prop(repitched) ribbon delete foam removed breather kit .I have seen 9.8 sometimes just for a split second . dont have any issues with the ski so may just leave it as it is what do you think ??
    Try setting your fuel pressure regulator at 50 psi and un hook the rising rate vacum line fron the fuel regulator and run it on static pressure this should clear up your rich condition, you want a 12- 12.5 AFR at wide open throttle. You may have to go up a few pounds on the static pressure to get your AFR's correct. Please post back your results.
    Last edited by 2fast4u; 09-30-2012 at 01:53 PM.

  5. #5
    Yup what he said!

  6. #6
    it's goin like boeing jdml's Avatar
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    hi guys will not get chance 2 do this till next week or week after but i will doffo post all my results as soon as i get back from my holliday thanks very much will speak soon :cheers

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    it's goin like boeing jdml's Avatar
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    but are we missing the point here guys i posted if it will b doing any harm running rich ??

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    it's goin like boeing jdml's Avatar
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    what do you think i will gain by setting it @ 12-12.5 ? thanks ..

  9. #9
    gordon lasiter #328's Avatar
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    Quote Originally Posted by jdml View Post
    what do you think i will gain by setting it @ 12-12.5 ? thanks ..
    Are you using oem injectors?
    What s.c. wheel? E1,C5,ET HB?

    With 15+ lbs boost i would think you want your afr in the 11.7 to 11.9 range.
    Running in the low 10's at wot very rich. Get it in the mid 11 range and your performance will be alot better.
    Did you say what your rpms where at wot?
    What is the afr @ idle?

  10. #10
    Lightning Struck's Avatar
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    Quote Originally Posted by jdml View Post
    but are we missing the point here guys i posted if it will b doing any harm running rich ??

    Gas in Oil, fouling plugs, etc. Its not a good thing running excessively rich. Plus its costing you ALOT of money. Figure 10-20% worse mileage.

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