General SAFC tuning questions
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General SAFC tuning questions
Hey guys,
If a car came stock with 270cc injectors then you upgraded to 370cc injectors (10% bigger) would one set the SAFC -10% (tricking the computer to thinking there is 10% less air coming in causing a 10% decrease in fuel flow) across the whole rpm range for a rough/base tune or am I not seeing the mathmatical complexity in setting the SAFC?
I ask this because that's what I did and my car falls flat on its face at around 2500rpm and it doesn't pull on the top end.
If a car came stock with 270cc injectors then you upgraded to 370cc injectors (10% bigger) would one set the SAFC -10% (tricking the computer to thinking there is 10% less air coming in causing a 10% decrease in fuel flow) across the whole rpm range for a rough/base tune or am I not seeing the mathmatical complexity in setting the SAFC?
I ask this because that's what I did and my car falls flat on its face at around 2500rpm and it doesn't pull on the top end.
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Re: General SAFC tuning questions
Originally posted by TNathe
Hey guys,
If a car came stock with 270cc injectors then you upgraded to 370cc injectors (10% bigger) would one set the SAFC -10% (tricking the computer to thinking there is 10% less air coming in causing a 10% decrease in fuel flow) across the whole rpm range for a rough/base tune or am I not seeing the mathmatical complexity in setting the SAFC?
Hey guys,
If a car came stock with 270cc injectors then you upgraded to 370cc injectors (10% bigger) would one set the SAFC -10% (tricking the computer to thinking there is 10% less air coming in causing a 10% decrease in fuel flow) across the whole rpm range for a rough/base tune or am I not seeing the mathmatical complexity in setting the SAFC?
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The only thing to be done is set the MAF type as Hotwire 5 or whatever it is right? I have tried increasing fuel and it does run a lot richer if I put it to 0% across the rpm range.
I test drove the car last night w/ the turbo on it, at like 2500rpm i was getting a reading of ~ 8% airflow. does this sound right?
I test drove the car last night w/ the turbo on it, at like 2500rpm i was getting a reading of ~ 8% airflow. does this sound right?
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I was just making my way back to post that I found a few people saying the -27% is a good setting to start with. 270/370 = 73% so ~27% increase in flow. Anyways, i'll try that and see if I can keep the motor together, 
Thanks guys!
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[QU073][1]0|21g1|\|4lly p0573d by 7|\|47h3 [/1]
1 7357 d|20v3 7h3 c4|2 l457 |\|1gh7 \^// 7h3 7u|2b0 0|\| 17, 47 l1k3 2500|2pm 1 \^/45 g3771|\|g 4 |234d1|\|g 0f ~ 8% 41|2fl0\^/. d035 7h15 50u|\|d |21gh7? [/QU073]
|\|0, 7h47 d035 |\|07 50u|\|d |21gh7. 4|\|d y0u l1k3ly |\|33d 70 74k3 0u7 m0|23 fu3l 7h4|\| 10%, 45 D4v3 5ugg3573d
1 7357 d|20v3 7h3 c4|2 l457 |\|1gh7 \^// 7h3 7u|2b0 0|\| 17, 47 l1k3 2500|2pm 1 \^/45 g3771|\|g 4 |234d1|\|g 0f ~ 8% 41|2fl0\^/. d035 7h15 50u|\|d |21gh7? [/QU073]
|\|0, 7h47 d035 |\|07 50u|\|d |21gh7. 4|\|d y0u l1k3ly |\|33d 70 74k3 0u7 m0|23 fu3l 7h4|\| 10%, 45 D4v3 5ugg3573d
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Originally posted by TNathe
I was just making my way back to post that I found a few people saying the -27% is a good setting to start with. 270/370 = 73% so ~27% increase in flow. Anyways, i'll try that and see if I can keep the motor together, Thanks guys!
I was just making my way back to post that I found a few people saying the -27% is a good setting to start with. 270/370 = 73% so ~27% increase in flow. Anyways, i'll try that and see if I can keep the motor together, Thanks guys!
They ya go buddy
Must be nice to be running 370s. I got 4 720s in my car, lol.
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Originally posted by Ryde _Or_Die
They ya go buddy
Must be nice to be running 370s. I got 4 720s in my car, lol.
They ya go buddy
Must be nice to be running 370s. I got 4 720s in my car, lol.
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Originally posted by TNathe
SAFC doesnt support that much adjustment does it, only 50% +/-? Oh well, you have the kind of money to support the horsepower needed to substantiate 720's then you got enough to get a new computer or whatever it takes.
SAFC doesnt support that much adjustment does it, only 50% +/-? Oh well, you have the kind of money to support the horsepower needed to substantiate 720's then you got enough to get a new computer or whatever it takes.
I have 550s stock. But I am about to go full standalone.
