How good are your cranking settings?

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02-20-2010, 07:46 PM

#21

dgmorr

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Quote:

Originally Posted by ismael_pt

Ouch! I forget to say the map i posted have the VE fuel map untuned (rescale problem). With the LC-1 hooked up and 10 minutes on the road the autotune will do the job. If thi isn't possible to you right now, tomorrow i'll post an updatep map with the correct VE values.

I'm running 8 psi on stock injectors and haven't seen any problems yet, but I have no idea of how much % duty cycles are.

Sweet thanks. I don't drive my car right now because it is winter and there is salt on the roads. I do take it out about once a month for a quick trip around the block.

I think I may just aim to use the stock injectors while I get used to all this tuning stuff. It is a lot nicer letting the stock ecu handle the idle for now though.

02-21-2010, 12:28 AM

#22

timk

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Here's my cranking settings:

My injectors are the RX-7 460cc Denso ones. We haven't tuned below 15c because it hasn't gotten any colder than that here lately.

02-21-2010, 07:27 AM

#23

ismael_pt

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That's odd. We both are using similar values but our injectors are way different. Do you smell unburnt fuel during cranking?

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02-21-2010, 07:55 AM

#24

timk

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Nah but does the cranking fuel take the dead times into account? The stock injectors are probably a bit quicker to open.

02-21-2010, 08:04 AM

#25

ismael_pt

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I think the adaptronic override the dead time correction table when cranking

02-23-2010, 02:31 PM

#26

dgmorr

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Ok dumb question time - came to me in one of my thinking dreams..

What exactly do these Idle Control pins do? Does it allow the stock ECU to control the IACV and anything at idle on the fuel map will still be controlled by the Adaptronic? I guess it boils down to this - when I upgrade my injectors, can I leave the jumpers on the Factory ECU pin settings?

02-28-2010, 12:32 PM

#27

PhantomRoadster

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It probably depends on the how large injectors you get.

Here are my cranking settings. I just kept increasing my cold cranking until it was finally able to start on the first try. But now when cold, rpms rise then falls and stalls.

02-28-2010, 04:38 PM

#28

ismael_pt

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Quote:

Originally Posted by PhantomRoadster

But now when cold, rpms rise then falls and stalls.

rpm rise at start ---- > post-cranking extra idle effort in conjuntion with the base idle effort value (open loop) at the actual engine temp.

rpm fall and stall after start ----> fuel long/short post-crank enrichment, base idle effort value @ actual temp cell or the combination of the two.

Apparently you've a very high post-cranking idle effort in a too short period of time, with an incorrect base idle effort for the temperature at you're attempting to crank.