hack for boost? vafc or afc
12-21-2004, 06:07 PM
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Re: hack for boost? vafc or afc (hatchedzex)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hatchedzex »</TD></TR><TR><TD CLASS="quote">can u kill two birds with one stone and just use a vafc when runnin low boost and tune accordingly?</TD></TR></TABLE>
I don't understand how you are "killing two birds with one stone" with it.
A VAFC allows you to alter fuel input at a certain RPM, the problem with the hack is, that it doesn't allow you to adjust ignition tables. The injectors are pulsed slower by hunting for a lower MAP value on the ECU. The problem with this, is that it hunts for a lower ign value as well. This makes the timing a LOT more advanced than it should be, and you need a good bit of base retard to keep from detonating.
You use the base map (-35 across the board) and get a wideband and tune from there until you're happy with your A/F readings.
I don't understand how you are "killing two birds with one stone" with it.
A VAFC allows you to alter fuel input at a certain RPM, the problem with the hack is, that it doesn't allow you to adjust ignition tables. The injectors are pulsed slower by hunting for a lower MAP value on the ECU. The problem with this, is that it hunts for a lower ign value as well. This makes the timing a LOT more advanced than it should be, and you need a good bit of base retard to keep from detonating.
You use the base map (-35 across the board) and get a wideband and tune from there until you're happy with your A/F readings.
12-22-2004, 06:54 AM
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Re: hack for boost? vafc or afc (BauleyCivic)
funny I've been running it for over a year and never detonated, then after throwing it on the dyno at work I see a/f is pretty safe.
12-22-2004, 08:18 AM
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Re: hack for boost? vafc or afc (88crxvtec)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 88crxvtec »</TD></TR><TR><TD CLASS="quote">funny I've been running it for over a year and never detonated, then after throwing it on the dyno at work I see a/f is pretty safe.
</TD></TR></TABLE>
where do you work?
</TD></TR></TABLE>
where do you work?
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12-22-2004, 09:24 AM
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Re: hack for boost? vafc or afc (RACEPAK)
12-22-2004, 10:21 AM
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Re: hack for boost? vafc or afc (BauleyCivic)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BauleyCivic »</TD></TR><TR><TD CLASS="quote">
A VAFC allows you to alter fuel input at a certain RPM, the problem with the hack is, that it doesn't allow you to adjust ignition tables. The injectors are pulsed slower by hunting for a lower MAP value on the ECU. The problem with this, is that it hunts for a lower ign value as well. This makes the timing a LOT more advanced than it should be, and you need a good bit of base retard to keep from detonating.</TD></TR></TABLE>
WOW.. What genius explained all that to you......
A VAFC allows you to alter fuel input at a certain RPM, the problem with the hack is, that it doesn't allow you to adjust ignition tables. The injectors are pulsed slower by hunting for a lower MAP value on the ECU. The problem with this, is that it hunts for a lower ign value as well. This makes the timing a LOT more advanced than it should be, and you need a good bit of base retard to keep from detonating.</TD></TR></TABLE>
WOW.. What genius explained all that to you......
12-22-2004, 11:36 AM
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Re: hack for boost? vafc or afc (tegunderpressure)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tegunderpressure »</TD></TR><TR><TD CLASS="quote">I wouldnt run either. FMU or Hondata/Uberdata/Turboedit etc.</TD></TR></TABLE>
I would run an afc hack long before I would do an fmu.. But a tunable ems system is the best option..
I would run an afc hack long before I would do an fmu.. But a tunable ems system is the best option..
12-22-2004, 12:51 PM
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Re: hack for boost? vafc or afc (tgreaves)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tgreaves »</TD></TR><TR><TD CLASS="quote">
WOW.. What genius explained all that to you...... </TD></TR></TABLE>
Some crazy republican down the street
WOW.. What genius explained all that to you......
</TD></TR></TABLE>Some crazy republican down the street
12-22-2004, 12:54 PM
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Re: hack for boost? vafc or afc (BauleyCivic)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BauleyCivic »</TD></TR><TR><TD CLASS="quote">
Some crazy republican down the street </TD></TR></TABLE>
WOW.. He sure is a smart fella..
Some crazy republican down the street
</TD></TR></TABLE>WOW.. He sure is a smart fella..
12-23-2004, 10:30 AM
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Re: hack for boost? vafc or afc (tgreaves)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tgreaves »</TD></TR><TR><TD CLASS="quote">
I would run an afc hack long before I would do an fmu.. But a tunable ems system is the best option..</TD></TR></TABLE>
I ran my 00 JRSC GSR for over 50k miles on an FMU, compression checked out great in the end, and it ran well. I had the hack on my turbo ZC and it ran like **** from day one.
Many, many people do fine with an FMU, hell, most turbo kits come with one. But all it takes is a search to find numerous people who have popped their motors on the hack.
Both perform off the same basic principle, however an FMU won't advance your timing at the worst possible time. Pretty easy decision if you ask me.
I would run an afc hack long before I would do an fmu.. But a tunable ems system is the best option..</TD></TR></TABLE>
I ran my 00 JRSC GSR for over 50k miles on an FMU, compression checked out great in the end, and it ran well. I had the hack on my turbo ZC and it ran like **** from day one.
Many, many people do fine with an FMU, hell, most turbo kits come with one. But all it takes is a search to find numerous people who have popped their motors on the hack.
Both perform off the same basic principle, however an FMU won't advance your timing at the worst possible time. Pretty easy decision if you ask me.
12-23-2004, 10:39 AM
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Re: hack for boost? vafc or afc (tegunderpressure)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tegunderpressure »</TD></TR><TR><TD CLASS="quote">
I ran my 00 JRSC GSR for over 50k miles on an FMU, compression checked out great in the end, and it ran well. I had the hack on my turbo ZC and it ran like **** from day one.
Many, many people do fine with an FMU, hell, most turbo kits come with one. But all it takes is a search to find numerous people who have popped their motors on the hack.
Both perform off the same basic principle, however an FMU won't advance your timing at the worst possible time. Pretty easy decision if you ask me.</TD></TR></TABLE>
It is a pretty easy decision.. Get a tunable ecu and be done with it..
I ran my 00 JRSC GSR for over 50k miles on an FMU, compression checked out great in the end, and it ran well. I had the hack on my turbo ZC and it ran like **** from day one.
Many, many people do fine with an FMU, hell, most turbo kits come with one. But all it takes is a search to find numerous people who have popped their motors on the hack.
Both perform off the same basic principle, however an FMU won't advance your timing at the worst possible time. Pretty easy decision if you ask me.</TD></TR></TABLE>
It is a pretty easy decision.. Get a tunable ecu and be done with it..
12-23-2004, 10:48 AM
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Re: hack for boost? vafc or afc (tgreaves)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tgreaves »</TD></TR><TR><TD CLASS="quote">
It is a pretty easy decision.. Get a tunable ecu and be done with it..</TD></TR></TABLE>
Which is why I listed that in my list of options for him.
It is a pretty easy decision.. Get a tunable ecu and be done with it..</TD></TR></TABLE>
Which is why I listed that in my list of options for him.
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