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Old 03-31-2008, 12:55 AM
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Injectors

Ok i have 370CC injectors i need to know what percentage i need to run these at to sit at astock level. i am adjusting it with a VAFC2 NEO. Can any one help me?
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Old 03-31-2008, 06:57 PM
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-24%

(stock injector / new injector) - 1 =
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Old 03-31-2008, 07:38 PM
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you can do that with the neo?!
that's crazy
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Old 03-31-2008, 07:56 PM
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what did u think it was for?
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Old 04-01-2008, 12:22 AM
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Well i tried it at -24% it was still running rich, so tomorrow i think i will try running it at -30% but thanks for the tip helped me alot...
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Old 04-01-2008, 12:41 AM
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neo doesnt do that nor does any other vafc. -24% is not equal to stock or anything like that. it works in different increments i have a vfac2 in my car and it is for fine fine fine tuning not changeing very large amounts of fueling if u are going to install new injectors then u need to get a standalone computer. if u are going to put 370cc in then ur going to run rich until u run too lean then detinate because the neo wont keep u in the duty cycle it works by adjusting the air flow reading not he fueling duty cycle thats why u dont see drag cars or any other tuned car running a vafc
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Old 04-01-2008, 12:53 AM
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Well Cobb told me that this would work. so we will see what happens. And besides if i run stock injectors then i am going to run to lean any way.
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Old 04-01-2008, 02:23 AM
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Quote:
Originally Posted by Saab2032 View Post
Well i tried it at -24% it was still running rich, so tomorrow i think i will try running it at -30% but thanks for the tip helped me alot...
How do you know it's running rich? do you have a WideBand O2 sensor hooked up?
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Old 04-01-2008, 10:50 AM
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why would u be running lean what have u done to ur car?
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Old 04-01-2008, 12:36 PM
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that's exactly what I'm trying to figure out too. Original poster we need more info to help you.
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Old 04-01-2008, 01:47 PM
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Ok Here is what i have done. I have t3 t04 turbo setup. plus i have 370CC injectors with a 255 walbro fuel pump. i know it is running rich because it is still dumping fuel into the exhaust. there for making it smoke. and yes i have a wideband to we are going to hook that up today. Any questions?
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Old 04-01-2008, 07:45 PM
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well i was runing 440 and a vafc2 @ -36 and had no problems
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Old 04-01-2008, 09:58 PM
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ya i think my set up will work just fine
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Old 04-02-2008, 09:34 AM
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ur running 370's with a t3/t4 and running rich?? what tuning computer are u running? AEM? APEX? CHIPPED? if ur just running a vafc ur going to blow ur engine, and if u have fuel in ur exhaust it wouldnt smoke. what color smoke is it???
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Old 04-02-2008, 11:09 AM
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Yes i am running rich. i have not driven it yet just idled. And yes fuel in your exhaust will smoke. And i am only running 7 pounds of boost.
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Old 04-02-2008, 12:27 PM
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what color is the smoke? do u have a rising rate fuel pressure regulator?
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Old 04-02-2008, 12:30 PM
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The smoke is White, and yes i have a 1.1 Rising rate regulator
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Old 04-02-2008, 12:33 PM
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thats coolant not fuel fuel is black, rich smoke is black casue the fuel gets burned with the left over fuel being black rich with carbon. its not fuel in ur exhaust that would be carbon. blue smoke is oil, coolant is white.
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Old 04-03-2008, 11:23 AM
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go get crome or hondata dyno tune. thats the best way to go if turboed without blowin your engine.
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Old 04-03-2008, 11:38 AM
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Ok well tell me how i am getting coolant in my exhaust???
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Old 04-03-2008, 03:20 PM
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blown head gasket
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Old 04-03-2008, 05:17 PM
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yup it is allowing the coolant to flow into the cylinders.
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Old 04-03-2008, 06:22 PM
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It isn't blown because it was fine when i parked it. and i have not even driven it yet. could it be from the EGR thing or whatever it is that runs coolant up to the intake manifold
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Old 04-03-2008, 06:25 PM
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lol egr= Exhaust Gas Recirculation
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Old 04-03-2008, 06:29 PM
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Well whatever it is.
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Old 04-04-2008, 11:55 AM
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have u ever revved on it during it just idleing? if u have then the extreme change in the pressures from building up boost pressure could have sucked it out of position.
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