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Old 01-24-2008, 12:40 AM   #1
ronnie s
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Default injector latency?

Anyone have a good guide on this? I don't know where the injectors came from but I know they are 650cc.
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Old 01-24-2008, 08:35 AM   #2
sense of nature
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Need to which ones .
Some require more latency than others , look @ the stock inj times Figure out the difference i.e stockers are 420 so if you had 840's you'd double the times , get it ?
Some like deatschwerk may not need to adjusted like that I use stock times on my 650's from them
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Old 01-24-2008, 10:53 AM   #3
ronnie s
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ya thats what i've done and it seems to work ok. Someone should come out with a nice guide for this. I tried the sti values at first and it helped out then I went up from there until I saw the values I wanted. I guess if the number works its good for now.
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Old 01-24-2008, 11:49 AM   #4
benw
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Quote:
Originally Posted by sense of nature View Post
Some like deatschwerk may not need to adjusted like that I use stock times on my 650's from them
Deatschwerks injectors are the same as stock, so the physical coil latency is unchanged. However, different ECU latency settings are required to achieve the final fueling result that allows for the least amount of AF correction.
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Old 01-24-2008, 01:25 PM   #5
mickeyd2005
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I disagree. I use DW650 on my LGT. The LGT and STi stock injectors are the same. The DW650 definitely have different latency than stock.

In closed loop (low load), do a scatter plot with load on the X-axis and total correction on the Y-axis. If the latency is correct, the scatter plot will be cloud around +-5%.

At high load, the latency has almost no effect. At low load, the latency affects the AFR correction the most. This will guide you in how to adjust latency versus scalar.
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