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Dynoed and A/F was 9???

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Old 07-15-2002, 01:44 PM
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Default Dynoed and A/F was 9???

I dynoed the other day and my car was at 11 A/F till 3500 rpm when boost kicked in and then went down drastically to 9 for some reason with the safc it wouldnt correct the prob no matter how much we leaned it out....im running a drag 3 kit with 12:1 fmu disk on stock injectors at 10psi?
Old 07-15-2002, 01:49 PM
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Default Re: Dynoed and A/F was 9??? (HybridCoupe)

what kind of wideband is that... is it tail pipe wideband or o2 bung style wideband. 9:1 af is damn rich... you car would fall flat in power.... how much pwr did it make by the way.. i think its faulty wideband more than anything else.
Old 07-15-2002, 01:49 PM
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Default Re: Dynoed and A/F was 9??? (HybridCoupe)


Did you lean it out only with the SAFC or did you try turning down the fuel pressure, too?

Sonny
Old 07-15-2002, 09:18 PM
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Default Re: Dynoed and A/F was 9??? (Sonny)

well i put down 214hp and 185 torque...i dont have a fuel pressure regulator....and we tried just tunning with the safc but it couldnt even budge the 9 A/F it was a dyno where they put the A/F tube in my downpipe and i ran the car...
Old 07-15-2002, 09:27 PM
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Default Re: Dynoed and A/F was 9??? (HybridCoupe)

me thinks faulty FMU. Then again, I always think that
Old 07-15-2002, 09:28 PM
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Default Re: Dynoed and A/F was 9??? (HybridCoupe)

there has to be something wrong with that
Old 07-15-2002, 09:36 PM
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Default Re: Dynoed and A/F was 9??? (BoostinDC2)

wrong with what....?
Old 07-15-2002, 11:57 PM
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Default Re: Dynoed and A/F was 9??? (HybridCoupe)

If you hurt a piston or ring...it will throw the fuel mixture way rich like that when boost hits. Could be one of the cylenders fouling making it run rich.....Mike
Old 07-16-2002, 12:07 AM
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Default Re: Dynoed and A/F was 9??? (HybridCoupe)

Don't overlook the fact that maybe it's just not tuned right. The JRSC's are famous for their bug-killing rich mixtures at high rpm's. When I first got my setup installed, it ran so rich at high rpm that it wouldn't even register on the wideband!



and then comes Hondata and the joy of playing basketball with my FMU.



Sonny


[Modified by Sonny, 1:07 AM 7/16/2002]


[Modified by Sonny, 1:08 AM 7/16/2002]
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