RC 1000cc car doesn't start well

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Oct 20, 2008 | 03:39 PM

darwin_evo

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From: Belgium

RC 1000cc car doesn't start well

I got some rc 1000cc injectors on my car.

I have them scaled dead on with idle/cruise trims at 0.2% and 0.1% (on evoscan, mitsulogger just gives 0/0)

Cold starts are ok most of the time. The real problem is with hot starts.

I have to crank it for about 4-6 seconds for it to start. there is a strong fuel smell as if the car is pig rich, but it quickly goes away after a few seconds.

Here are my scaling and latency settings:

I started with some values i found here and changed them that way:
-11.72v to 18.68v are the values i found *0.95.
-7.03v and 9.38v are some values someone posted saying it would help the problem i had. i didn't solve my problem.

I am currently out in the dark at the moment, and I have no idea what i should be doing.

Any help would be apperciated.

Oct 20, 2008 | 03:47 PM

tephra

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you need to reduce your 'Start up Enrichment IPW Adder' map.

What's your ROMID?

Oct 20, 2008 | 03:53 PM

darwin_evo

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From: Belgium

i have a 2007 euro evo 9 my rom is 88840017.

Oct 20, 2008 | 03:55 PM

darwin_evo

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what will this table do to fix my problem?

Oct 20, 2008 | 04:31 PM

RazorLab

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yea, what tephra said, take out the additional cranking IPW at higher coolant temps via that table

Oct 20, 2008 | 04:39 PM

kkarim

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i'm interested too. how can i find this table for my ecu?

Last edited by kkarim; Oct 20, 2008 at 04:42 PM.

Oct 20, 2008 | 04:40 PM

tephra

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have you got the table defined in your xml?

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Oct 20, 2008 | 04:43 PM

lan_evo_mr9

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What's the actual table name for 'Start up Enrichment IPW Adder' under ecuflash?

Oct 20, 2008 | 04:43 PM

tephra

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Add this to your xml in ecuflash:

Code:

	<scaling name="ColdStartTime" units="ms" toexpr="x*0.008" frexpr="x/0.008" format="%.1f" min="0" max="500" inc="1" storagetype="uint16" endian="big"/>
	<table name="Startup Enrichment IPW Adder #1 (Main)" category="Fuel" address="5240" type="2D" level="1" scaling="ColdStartTime">
		<table name="Coolant Temperature" address="7100" type="Y Axis" elements="9" scaling="Temp"/>
	</table>

Then roughly halve all the values (560 -> 1000 = 2x as big)

Last edited by tephra; Oct 20, 2008 at 04:48 PM.

Oct 20, 2008 | 04:45 PM

#10

lan_evo_mr9

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From: MD

I have a cold start ussue, would adjustment of this table help with that also?

Oct 20, 2008 | 04:49 PM

#11

tephra

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^ edited that a few times - make sure you get the latest

Oct 20, 2008 | 04:50 PM

#12

lan_evo_mr9

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From: MD

Just installed the definitions- worked perfect. Cold start e85 adjustment tips?

Oct 20, 2008 | 04:55 PM

#13

kkarim

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this is what the table looks like.

Last edited by kkarim; Oct 20, 2008 at 04:57 PM.

Oct 20, 2008 | 04:59 PM

#14

tephra

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yup that's the right one.

so basically those ms values are unscaled by injector scaling, so whatever you have scaled your injector scaling to, roughly do the same to those ms's.

ie, for me

513 -> 1083 = 2.11111, so i just divided all the ms's in that table by 2.

I suppose for E85

513 -> 835 = 1.63, so divide them by 1.6ish...

Oct 20, 2008 | 05:00 PM

#15

darwin_evo

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From: Belgium

kkarim, this is what the table look like on my pc after i added the text to the xml.

i will try tomorrow to put in ecu with value /2 and see if it helps the issue.

i must do /2 only for the values on the right part correct?

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