how to calculate how much fuel to run... and how to get that? fmu?
11-22-2005, 07:54 PM
#1
0.5 BAR
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Join Date: Nov 2005
Location: new phila
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how to calculate how much fuel to run... and how to get that? fmu?
i want to run around 7 psi on my v6, i have no idea and i cant find much on how much more fuel pressure i will need to make... i want to go low budget on the whole kit and im looking towards an fmu... what does anyone recommend? a 10:1, 12:1 ? ... or is that even too much?... i just want to have a good idea of a setup before i get an a/f gauge and start to tune..., or is that the only way to know how much fuel to run so i dont lean out..?...
-thanks
-thanks
11-22-2005, 07:57 PM
#2
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Join Date: Aug 2005
Posts: 199
Re: how to calculate how much fuel to run... and how to get that? fmu?
drop the FMU idea man you SHOULD be getting your ecu chipped instead works alot better runs like new... but if u wanna get a FMU then get the 12:1 cus i got a 12:1 on my civic 1.5 litre and it works fine just stumbles a little bit at idle...
11-22-2005, 09:24 PM
#3
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Join Date: Nov 2005
Posts: 106
Re: how to calculate how much fuel to run... and how to get that? fmu?
ditch the fmu and get your ecu chipped with a basemap, i have seen many engines been fucked by lack of fuel management it costs just a little bit more but you'll be on the safe side
11-23-2005, 01:10 AM
#5
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Re: how to calculate how much fuel to run... and how to get that? fmu?
Originally Posted by saxxu
ditch the fmu and get your ecu chipped with a basemap, i have seen many engines been fucked by lack of fuel management it costs just a little bit more but you'll be on the safe side
11-23-2005, 01:52 AM
#6
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Re: how to calculate how much fuel to run... and how to get that? fmu?
IMHO, on a low boost setup like that, an FMU will do just fine. Id look for an adjustable rate-of-rise FMU like a Bell.
Id start with around 8psi of extra fuel pressure per psi of boost. Im sure that will get you pretty close, and go from there with a WB.
I assume this is on a fuel injected engine?
Id start with around 8psi of extra fuel pressure per psi of boost. Im sure that will get you pretty close, and go from there with a WB.
I assume this is on a fuel injected engine?
11-23-2005, 10:06 AM
#7
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Re: how to calculate how much fuel to run... and how to get that? fmu?
Originally Posted by mizter_2
drop the FMU idea man you SHOULD be getting your ecu chipped instead works alot better runs like new... but if u wanna get a FMU then get the 12:1 cus i got a 12:1 on my civic 1.5 litre and it works fine just stumbles a little bit at idle...
11-28-2005, 01:46 PM
#8
0.5 BAR
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Join Date: Nov 2005
Location: new phila
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Re: how to calculate how much fuel to run... and how to get that? fmu?
alright this info is good thanks alot... where should i look for FMUs?... ebays got em but i dont think those have changeable plates
11-28-2005, 05:15 PM
#9
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Re: how to calculate how much fuel to run... and how to get that? fmu?
Originally Posted by blackoutgt
i just want to have a good idea of a setup before i get an a/f gauge and start to tune..., or is that the only way to know how much fuel to run so i dont lean out..?... -thanks
11-28-2005, 07:27 PM
#10
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Join Date: Nov 2005
Location: new phila
Posts: 169
Re: how to calculate how much fuel to run... and how to get that? fmu?
Originally Posted by SloS13
I hope you are referring to a wideband o2, not a $60 autometer one.
