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SAFC ( knobs ) and 390's what setting?

Old 08-06-2004, 02:33 PM
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Default SAFC ( ***** ) and 390's what setting?

i know i have to scale them down but how much do you suppose i need? 20% 25%?

i read this but i am horrible at math!!!!

The scale for common injector sizes used is 5% for 440-450cc, 4%, 390cc, 3% for 310cc.. then subtract 1 percent per 500 RPM increase. This will give us are starting point.
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Old 08-06-2004, 02:46 PM
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Default Re:SAFC ( ***** ) and 390's what setting?

wait i think i figure it out...

this would be for 450's which i do not have

So, lets apply everything we've learned, and come up with base settings for 450cc injectors.

1) 240/450 = 0.53
2) 0.53 - 1 = -0.46
3) -0.46 * 100 = -46

So we have a 46% difference, we add our 5% for injector latency compensation, which leaves us with these settings:

1000 - 40%
1500 - 40%
2000 - 39%
3000 - 38%
4000 - 37%
\

but if i did the math correctly i come up with this...

1) 240/390 = 0.61
2) 0.61 - 1 = -0.39
3) -0.39 * 100 = -39

So we have a 39% difference, we add our 4% for injector latency compensation, which leaves us with these settings:

1000 - 34%
1500 - 34%
2000 - 33%
3000 - 32%
4000 - 31%


did i do this right?
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Old 08-08-2004, 12:05 AM
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Default Re:SAFC ( ***** ) and 390's what setting?

jesus does anyone ever read these


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Old 08-08-2004, 04:42 PM
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Default Re:SAFC ( ***** ) and 390's what setting?

ooooo.look at the shiny nickle!! yay!!
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Old 08-09-2004, 02:03 PM
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Default Re:SAFC ( ***** ) and 390's what setting?

eat my *** bitch!!!!!!!!
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Old 08-09-2004, 11:33 PM
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Default Re:SAFC ( ***** ) and 390's what setting?

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Old 08-10-2004, 11:22 AM
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Default Re:SAFC ( ***** ) and 390's what setting?

i mean ..please aet my ***...and someone give me some freaking feedback!
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Old 08-12-2004, 01:08 AM
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Default Re:SAFC ( ***** ) and 390's what setting?

My settings on 390c (B16A2, T3/T4B, 6-7psi, SMC500):

Idle: -30%
1000: 32%
2000: 31%
3000: 30%
4000: 29%
4500: 28%
5000: 27%
5500: 26%
6000: 25%
7000: 24%
8000: 24%

A bit rich, but no place around to tune.
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Old 08-12-2004, 11:06 AM
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Default Re:SAFC ( ***** ) and 390's what setting?

im asuming that those settings are with a digital SAFC?

anyway ill go with that...ill see how it goes this weekend
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