Keehnel1414

First off i don't really get this afc hack concept. Is there someone who can please explain this too me. Also i have heard that it advances your timing a whole bunch. How do you correct this, if you can? I have a d16z6 and want to boost it to about 10psi will this work with 450cc injectors and and afc. Also i heard that there is something called the missing link that is involved with this setup. What is a missing link. If someone could just explain to me how an afc setup works in full detail and considering that i am retarded and don't know all those high tech words that would be great.

Sorry for all the questions. I have read about a dozen post i just don't understand how this system works. Thanks for all your help.

Dr.Boost

I think we need a sticky about this subject, huh? *hint hint*


You can run up to about 10-11 psi with the S-AFC hack. It reduces the voltage coming from the map and doesn't sense boost up to 10-11 psi. Yes it will advance your timing. You can either retard your initial timing a bunch, or get a BTM and retard it a little. You should not need a mising link with this setup unless you are planning on exceeding 10-11 psi although I have had cels once in a while. There are so many posts just like this one its rediculous. If you search around you will find everything you ever needed to know in this site.
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Keehnel1414

Yes i know that there are tons posts about this topic but what i am looking for is something like a Afc for dummies. I don't understand what you said by Map and btm. I am i just retarded and everyone else knows what a map is and a btm or am i not the only one?

Last_Mohican

A BTM stands for Boost timing master. It retards your timing a set amount per pund of boost. For instance it could retard your timing 1 degree per pound. AS for Map sensor that is what your ECU(computer) reads for management of the engine. The afc from my understanding actually is telling the ECU to run the injectors REAL lean but since the injectors are not stock anymore(much bigger 450's) your engine is not running lean at all. I guess the best analogy i can think of is if you were going to blow up something and you are used to using low level explosives and somone(the afc) tells you to use only a tiny bit(run lean). He has replaced your explosive material with C4 and therefore a tiny bit is enough. HMT guys correct me if i am wrong but that is how i understand it.

RENR

*** all the bull ---- the afc works! can run my ---- all the way to 12psi on a sotck d16a6 and no map light! just retard the timeing at the distrutor and thats it. *** that

Dr.Boost

Very good. You act like you don't know what you are talking about when you actually do.

You are very lucky to be not getting cels at 12 psi. Are you using a missing link as well?
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RENR

nope no missing link. it just works man. but anything past 12 give me a cel. i think 12 is the limit

Keehnel1414

How do you adjust the timing with the distrubutor?

Tom-Guy

Sticky? Done.

The stock Honda MAP sensor cannot sense beyond 9.25 psi 85-91, or 10.65 psi 92+. Understand that if you run right at the borderline, boost creep/spike might own you. If you run 12 psi... hope it isn't daily! I'd run that if I knew I was rich for a timeslip, or for a little fun, but there's too much chance of something going wrong if you drive daily like that.

Keehnel1414, you should pick up a factory service manual, a Helms, if you need to know something like how to adjust your base timing at the distributor. What car do you have? I may be able to provide your service literature in .pdf format.

Keehnel1414

1993 civic hatchback si. Thanks for the help and where can i get a helms manual? Also does the afc advance your timing through redline? If i correct this by retarding the timing with the distributor will the afc counter back and just advance the timing agian.