FIC 1200: Should I be concerned with this data match?
Mar 30, 2018, 05:42 PM
#5
But before doing that, verify with FIC that this will help to balance your mixtures.
Last edited by 2006EvoIXer; Mar 30, 2018 at 05:48 PM.
Mar 31, 2018, 08:32 PM
#7
Account Disabled
Cylinder 4 always runs the leanest.
The offset or deadtime or whatever else you want to call it, it's an adder so it's the actual time which needs adding to the calculated injector pulse width to give the actual pulse width in order to get the correct AFR.
The time is only valid for fuel at 3 bar base pressure.
So in the case of fitting a pump that's too big and idling with 42 PSI on the gauge (9 psi more than 3 bar), the offset is greater.
Those numbers are also voltage dependent so it should state the voltage at which they're tested.
The offset or deadtime or whatever else you want to call it, it's an adder so it's the actual time which needs adding to the calculated injector pulse width to give the actual pulse width in order to get the correct AFR.
The time is only valid for fuel at 3 bar base pressure.
So in the case of fitting a pump that's too big and idling with 42 PSI on the gauge (9 psi more than 3 bar), the offset is greater.
Those numbers are also voltage dependent so it should state the voltage at which they're tested.
Last edited by RightSaid fred; Mar 31, 2018 at 09:14 PM.
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Apr 1, 2018, 04:52 AM
#8
Scaling: 1008
4.69 | 4.08
7.03 | 3.072
9.38 | 2.064
11.72 | 1.464
14.06 | 1.128
16.41 | .936
18.68 | .72
Latencies should be really close with initial scaling on the rich side.
Cylinder 4 always runs the leanest.
The offset or deadtime or whatever else you want to call it, it's an adder so it's the actual time which needs adding to the calculated injector pulse width to give the actual pulse width in order to get the correct AFR.
The time is only valid for fuel at 3 bar base pressure.
So in the case of fitting a pump that's too big and idling with 42 PSI on the gauge (9 psi more than 3 bar), the offset is greater.
Those numbers are also voltage dependent so it should state the voltage at which they're tested.
The offset or deadtime or whatever else you want to call it, it's an adder so it's the actual time which needs adding to the calculated injector pulse width to give the actual pulse width in order to get the correct AFR.
The time is only valid for fuel at 3 bar base pressure.
So in the case of fitting a pump that's too big and idling with 42 PSI on the gauge (9 psi more than 3 bar), the offset is greater.
Those numbers are also voltage dependent so it should state the voltage at which they're tested.
Thanks for the good discussion guys.
Apr 1, 2018, 06:33 AM
#9
Evolved Member
You guys are splitting hairs here. We are talking microseconds, .000025 of a second delay difference between injectors awsome. even at idle isn’t gonna change afr more than a point or two. I’m sure the stock injectors aren’t even close to that good.
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