AFC only good till 12lbs
#1
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AFC only good till 12lbs
Everyone says the afc is only good till 12lbs.
Is this becuase in order to run the correct a/f at higher lbs you need to set the trim higher, and if you do that it throws CE???? If that is the case two other questions
1. Why does the higher correction throw CE......because of MAP?
2. If it is because of MAP could i just throw a check valve in?\
Someone that seriously knows the system, please help a brotha out.
[Modified by BorderM3, 7:23 PM 1/9/2003]
Is this becuase in order to run the correct a/f at higher lbs you need to set the trim higher, and if you do that it throws CE???? If that is the case two other questions
1. Why does the higher correction throw CE......because of MAP?
2. If it is because of MAP could i just throw a check valve in?\
Someone that seriously knows the system, please help a brotha out.
[Modified by BorderM3, 7:23 PM 1/9/2003]
#3
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Re: AFC only good till 12lbs (BorderM3)
1. Why does the higher correction throw CE......because of MAP?
2. If it is because of MAP could i just throw a check valve in?
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Re: AFC only good till 12lbs (VTC_boost-less_CiViC)
The exact amount of PSIs you can run depends on the correction factor, so max boost you can use will depend on how you dial it in, and what size injectors you run. If you use 390's you will not be able to even run as much PSIs as 450's. You could try 550's. Those might allow you to run more than 12psi because you would be dialing the map down more. Not sure how that would run, or if it would work well tho.
If you're running more than 12psi you probably have more money into your setup though, so going with another option may be a better idea.
If you're running more than 12psi you probably have more money into your setup though, so going with another option may be a better idea.
#5
Re: AFC only good till 12lbs (mos)
the afc works at 12 lbs with a larger fuel pump and fmu. i would run 12 on my gsr motor(stock) on 93 octane. ran 20+ lbs on 116 octane.
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Re: AFC only good till 12lbs (BorderM3)
Thanks guys... exact info i was looking for.
I have dsm fuel pump, so maybe if i put a 255lph inline on top of that i can squeeze a little more than 12psi. I am running 8 right now.
I have dsm fuel pump, so maybe if i put a 255lph inline on top of that i can squeeze a little more than 12psi. I am running 8 right now.
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Re: AFC only good till 12lbs (BorderM3)
Actually, your DSM pump is adequate-unless your having problems with it, I'd leave it alone. I'm runnin a DSM pump as well, and with the "Hack" too much Fuel Pressure isn't good for the 450's. Do you have a FP gauge, if so what's you rail pressure?
Like I said, I'm using the DSM pump, stock rail/FPR, 450's, and have AFC trimmed at 35% across the board and can run 12psi(per the gauge) with no CEL's. GL
Like I said, I'm using the DSM pump, stock rail/FPR, 450's, and have AFC trimmed at 35% across the board and can run 12psi(per the gauge) with no CEL's. GL
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#8
Re: AFC only good till 12lbs (BorderM3)
I'm not running the afc hack, but i'm using a safc, 440cc injectors, missing link and 255lph pump. We pushed 13psi. So yea, you can run over 12.
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Re: AFC only good till 12lbs (autoEXturbo)
OK now im more confused it hgouht anytime you used the AFC with dsm inj it was a AFC hack???????(never knew why they called it a hack anyway)
Whats the difference with your setup?
Whats the difference with your setup?
#10
Re: AFC only good till 12lbs (BorderM3)
I'm not sure about the hack, i heard about it but never wanted to use it. The fuel setup i'm using is what alot of the guys without standalones on the east coast use. Seems like nobody else uses it or recommends it, but works great for me. The injectors aren't off a dsm, they are RC engineering injectors. If you have questions, you can always call inline pro (703) 644-1788, they helped me out. The 13psi was at the track and even then, due to my fuel lines being stock and small and not having a big enough pump I was running close to lean. I normally just run 10psi daily untill i go standalone.
#11
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Re: AFC only good till 12lbs (autoEXturbo)
I'm not running the afc hack, but i'm using a safc, 440cc injectors, missing link and 255lph pump. We pushed 13psi. So yea, you can run over 12.
#12
Re: AFC only good till 12lbs (VTC_boost-less_CiViC)
I'm not running the afc hack, but i'm using a safc, 440cc injectors, missing link and 255lph pump. We pushed 13psi. So yea, you can run over 12.
Not with the hack you can't. I'll say it again... the AFC uses the stock MAP sensor to read boost and fuel accordingly. The stock MAP can only read up to about 11.5-12psi, or better put, you can only boost as much as your stock MAP sensor will read with the AFC hack. The only other way would be to use an FMU, but running an FMU with 450's = WAAAAAAAY to rich!
Not with the hack you can't. I'll say it again... the AFC uses the stock MAP sensor to read boost and fuel accordingly. The stock MAP can only read up to about 11.5-12psi, or better put, you can only boost as much as your stock MAP sensor will read with the AFC hack. The only other way would be to use an FMU, but running an FMU with 450's = WAAAAAAAY to rich!
[Modified by autoEXturbo, 2:45 PM 1/9/2003]
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Re: AFC only good till 12lbs (autoEXturbo)
my bad, how did i leave out that i'm also running a FMU 12:1 disk, RC 440's, SAFC, missing link, and 255lph pump. So no, my 13psi is not on the afc hack.
[Modified by autoEXturbo, 2:45 PM 1/9/2003]
[Modified by autoEXturbo, 2:45 PM 1/9/2003]
#14
Re: AFC only good till 12lbs (RAWB)
With that setup, you must be getting 10 miles/gallon I was mad RICH using all that with my stock 240's. How much are you trimming with the AFC?
#15
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Re: AFC only good till 12lbs (autoEXturbo)
FMU 12:1 disk, RC 440's, SAFC, missing link, and 255lph pump.
that's exactly the same setup i use. At 14psi 36deg. total timing i dynoed at 334hp 258tq
that's exactly the same setup i use. At 14psi 36deg. total timing i dynoed at 334hp 258tq
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Re: AFC only good till 12lbs (DRAGLS)
FMU 12:1 disk, RC 440's, SAFC, missing link, and 255lph pump.
that's exactly the same setup i use. At 14psi 36deg. total timing i dynoed at 334hp 258tq
that's exactly the same setup i use. At 14psi 36deg. total timing i dynoed at 334hp 258tq
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