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PostPosted: Mon Apr 06, 2009 3:02 am 
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Joined: Fri Jul 04, 2008 5:16 am
Posts: 39
Location: Karachi
Hi all

I am facing a difficulty regarding fueling. I am using G16A Block with G13B Head and running it on 13psi M24 Garret Turbo. Fueling is by AFC Neo injector size are 330CC and using stock FPR plus external mechanical set on 60psi. The problem is my AFR ration in 3rd Gear is 16 to 20 which is dangerous for my engines I am using stock Internals.

I have few questions

How long should I go with the above setup

Secondly how can I improve the AFR ratio

I am right now planing to null the stock FPR should it helps?

Your expert opinions would be highly appreciated

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PostPosted: Mon Apr 06, 2009 2:24 pm 
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Joined: Fri Feb 13, 2009 7:10 pm
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Location: Vancouver, WA
what fuel pump are you running? fuel pressure dropping off under boost?

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PostPosted: Mon Apr 06, 2009 2:37 pm 
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Put the AFC on ebay and hope some fool pays good money for it and get an ECU instead that you can map. Failing that at least get a piggy back that can adjust the spark timing.


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PostPosted: Mon Apr 06, 2009 5:42 pm 
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Location: Vancouver, WA
if you sell the AFC PM me.

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98 swift 1.6 16v swap
03 cobra bolt ons
97 3000gt vr4 e85, high comp, bolt ons
too many others to list


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PostPosted: Mon Apr 06, 2009 11:33 pm 
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baldurg wrote:
Put the AFC on ebay and hope some fool pays good money for it and get an ECU instead that you can map. Failing that at least get a piggy back that can adjust the spark timing.


I am using piggy back Apexi Neo

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PostPosted: Mon Apr 06, 2009 11:34 pm 
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VR4 wrote:
what fuel pump are you running? fuel pressure dropping off under boost?


I am using Bosch 230LPH yes fuel pressure dropping under full boost AFR is giving very confusing figure first it give 9.2 then jump to 20 then return back to 12 and then goes back to 16 again and this happening all the time in 3rd gear meaning that some thing restricted fuel some time

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