can you use a fmu with a vafc
11-23-2004, 01:27 PM
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can you use a fmu with a vafc
just was wondering because my buddy put together a turbo civic just so we could learn how to tune.i went out and bought this book "how to tune engine management systems" but i still dont understand half of what is in that book.
so i guess am the hands on type guy.so anybody who want to help me out so i can get a lot better please give me some good feed back.TIA
so i guess am the hands on type guy.so anybody who want to help me out so i can get a lot better please give me some good feed back.TIA
11-23-2004, 04:24 PM
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Re: can you use a fmu with a vafc (sneezyh22a4)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ben@importparts.com »</TD></TR><TR><TD CLASS="quote">Technically you can.</TD></TR></TABLE>
yup, this is good too. I say its better than just running vafc w/ stock regulator.
FMU+VAFC = doable
yup, this is good too. I say its better than just running vafc w/ stock regulator.
FMU+VAFC = doable
, now i'm using hondata for management.
11-24-2004, 02:58 PM
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ok the fmu is a 12:1 ratio and we put the fuel pressure on the rail to 45psi and it goes up to 50 as soon as you touch the throttle.we are using a 9.5 spring in the wastegate with a manual turbosmart boost controoler set to it's lowest point.with tha vafc set to zero at all points as soon is the car is in boost tyhe ar ratio goes way rich and the turbo spools like crazy but the car bearly moves i mean you can't even feel any pull at all.like i said in the first post this is a car that me and my friends just put together so we can tearn how to tune.anybody else have any input to help me hot would be great.TIA
11-29-2004, 06:48 PM
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Re: (sneezyh22a4)
i ran the FMU and the v-tec controller, and it worked fine until i upgraded the injectors, i took out the FMU and am running just the controller and it works great, and no check engine light.
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11-29-2004, 10:26 PM
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Re: (turbow8)
The FMU makes it 2168419816981684 times harder to properly tune the SAFC... I ran into these problems on my first set up... its hard to set fuel by RPM, then actually put a load on the motor, and have different boost levels at diff. rpm's etc... just so many different variables, its easier to remove one (the fmu)...
if you have larger injectors, there is really no need to increase fuel pressure, just use the afc to adjust the duty cycle properly and get'r dun... If you still feel you absolutely need more fuel pressure to be safe, go buy a cheap little b&m regulator and call it a day...
just my $.02....
-Chris
if you have larger injectors, there is really no need to increase fuel pressure, just use the afc to adjust the duty cycle properly and get'r dun... If you still feel you absolutely need more fuel pressure to be safe, go buy a cheap little b&m regulator and call it a day...
just my $.02....
-Chris
11-29-2004, 11:55 PM
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Re: (BoostedCivicSedan)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BoostedCivicSedan »</TD></TR><TR><TD CLASS="quote">The FMU makes it 2168419816981684 times harder to properly tune the SAFC... I ran into these problems on my first set up... its hard to set fuel by RPM, then actually put a load on the motor, and have different boost levels at diff. rpm's etc... just so many different variables, its easier to remove one (the fmu)...
if you have larger injectors, there is really no need to increase fuel pressure, just use the afc to adjust the duty cycle properly and get'r dun... If you still feel you absolutely need more fuel pressure to be safe, go buy a cheap little b&m regulator and call it a day...
just my $.02....
-Chris</TD></TR></TABLE>
Not bad
if you have larger injectors, there is really no need to increase fuel pressure, just use the afc to adjust the duty cycle properly and get'r dun... If you still feel you absolutely need more fuel pressure to be safe, go buy a cheap little b&m regulator and call it a day...
just my $.02....
-Chris</TD></TR></TABLE>
Not bad
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