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really AFCs blow the engines?

Old 05-14-2006, 02:59 PM
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Default really AFCs blow the engines?

after i did read the wiki ago some weeks , and i'm seeing severals guys runing still with AFCs like VAFC or so , and they not blown his engines... really that's true if you run with a AFC , you will blow your engine soon? or that not happend in all cases?
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Old 05-14-2006, 03:32 PM
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Default Re: really AFCs blow the engines?

with an afc you are tricking the ecu into seeing different vacuum reading then the motor is acutally seeing. So when you take fuel out you make the ecu think you are running more vacuum this less fuel. the problem with this is the stock ecu will run more timing in higher vacuum readings. So when you scale with the afc for bigger injectors you end up advancing the timing, more timing means knock and knock blows motors
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Old 05-14-2006, 03:41 PM
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Default Re: really AFCs blow the engines?

i know but.. the safc you cant to adjust the timing? or there are not no "AFC" that you can to adjust the timing? Emanage neither?.... i see my ecu chipped soon!
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Old 05-14-2006, 04:08 PM
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Default Re: really AFCs blow the engines?

The people that run an AFC are people that have basically no understanding of how ECUs work.
No piggyback will make your car run nice on much larger injectors.
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Old 05-14-2006, 04:35 PM
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Default Re: really AFCs blow the engines?

i was running 13psi and had not many problems with the safc but it really isnt great managemant. I was able to get away with more than you guys typically will because the safc doesnt cause the ecu to advance the timing, it has no effect whatsoever.
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Old 05-14-2006, 04:57 PM
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Default Re: really AFCs blow the engines?

How do you get passed the map sensor?

i was thinking of using one for 14psi but didnt know how
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Old 05-14-2006, 08:18 PM
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Default Re: really AFCs blow the engines?

Originally Posted by Dmc1
Walter you can adjust timing with Emanage but you have to buy extra features to use the timing and they cost a lot of money. around $800us so really you could buy a chipped ecu $200 and then pay someone to tune your car for around $200-400 depending on what they charge and you still saved money and have a better running car.

the people running afcs safely are not running very much boost that = no HP. I know your gunning for your friend with the STI so your going to need a chipped ecu and crome so you can run a manly setup.
oh, i see , too i see that you have good memory about my friend with his STI haha , i remember that STI's friend runing with SAFC and AVC-R but i dunno if his car blow or not sometimes..

About the money yes, the emanage is very expensive, and i would like not to pay to other guy for some day to tune my car, i would like to do myself (if a read the complete wiki from PGMIF.ORG , i will learn to tune a ECU? cuz i've seen that the wiki has great info but i dunno if here there are all the necessary for to know to tune a ecu).

i know that with a safc you can to adjusta the 50% +/- the capaticy to your injectors, right? but then, if you can largest injectors , you cant to ajustar the 50% +/- from those injectors? (i know you will need a better fuel pump) ...

ey brothers, ty for your answers. i appreciate it.
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Old 05-14-2006, 10:39 PM
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Default Re: really AFCs blow the engines?

Some ppl also run a Universal Boost Timing Retard. But with the price of that and the S/VAFC, you're better off with crome.
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Old 05-14-2006, 11:32 PM
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Default Re: really AFCs blow the engines?

i had a buddy who was running an safc with the BTM on his celica and it rocked

Is that true that the safc doesn't advance timing like the vafc?
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