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Old 03-05-2006, 04:39 PM   #1
gmanwrx
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Default What percent on idle for an 800ccc.

i have my car tuned with ap... i had 565 pinks running 5% on idle or coming to a stop.. with the 800cc i can't run 5% becuase the hole is too big. i beiieve it's down to 1-2% now and my car sound and feels like it going to stall when coming to A stop. needs some help. this is my daily driver or do i just get smaller injectors.
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Old 03-05-2006, 05:40 PM   #2
BIG GUN
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Quote:
Originally Posted by gmanwrx
i have my car tuned with ap... i had 565 pinks running 5% on idle or coming to a stop.. with the 800cc i can't run 5% becuase the hole is too big. i beiieve it's down to 1-2% now and my car sound and feels like it going to stall when coming to A stop. needs some help. this is my daily driver or do i just get smaller injectors.
I am running modded stk. [850cc] injectors w/ a Protuned A/P, and mine idles just like it did stock. That is w/ a 40T & Walbro.
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Old 03-05-2006, 06:07 PM   #3
JRSCCivic98
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How are you changing the fuel percentages? Do you have ST? Does it not have a place to put in your injector size? The overall corrections are the same across the band for the fuel if all you're changing is the injectors. All else fails... here's the equation for injector correction.

565/800=0.71 So, if the 565cc is at 100% then 800cc would be 71%. You basically need to run 29% less fuel across the board to make it run the same (if the injectors are the only thing changing).
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Old 03-05-2006, 06:56 PM   #4
kingtut12
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FWIW, I had my wrx protuned with ap and my 800 injectors were scaled to 530. The car did run horrible and stall when not scaled, just as you described. But all good now.
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Old 03-05-2006, 08:04 PM   #5
gmanwrx
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i run's fine till i come to a stop. i don't know if my idle is too low or to much fuel. then when i step on it hard it stalls then just takes off.. no smoke...
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Old 03-05-2006, 10:34 PM   #6
JRSCCivic98
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If all you did was change your injectors from 565 to 800 and no other changes (including to the tune) then your car is running 30% richer EVERYWHERE. I don't care how it runs or doesn't. That's the end result despite what world you think you live in. Scale the injectors and you're done. Simple as that. Then when you get to the point where you actually need the added fuel from the bigger injectors it will be there with a simple change. Work smart, not hard.
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