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How do I read my current IAM?
Posted:
Sun Feb 05, 2006 4:43 amby JimbobUK
Hi all... Just got my OpenPort 1.2 a couple of days ago!
First question then... How do I actually read my IAM? Do I need to find the address in RAM for my ECU version, or is it labelled as something else in ECUexplorer?
MY ECU is a UK 01 WRX [AF530-7554]...
Many thanks,
James
Posted:
Sun Feb 05, 2006 12:56 pmby crispyduck
From ecuExplorer click on 'User-Defined Data Items. You will see a list of 'Advance Multipliers'. Active all except the ones at addressed FF****. Then from the 'Real-time view' click to see all these new data items and see which one is between 1 and 16. Hopefully you should have only one, if not post back here with their values and it should be easy for the rest of us to spot.
-Steve.
Posted:
Sun Feb 05, 2006 3:40 pmby JimbobUK
Cheers Crispy, I'll give it a try ASAP!
Posted:
Mon Feb 06, 2006 11:20 amby JimbobUK
Well, I tried this on the way home tonight... Hmmm... All but two of the IAM addresses are way off / invalid values...
But...
0x020124 is stuck at 16
0x020168 is stuck at 8
So, I dunno.... Perhaps I should reset the ECU, and see what these two addresses do??? What was the seed value after reset?
Posted:
Mon Feb 06, 2006 11:55 amby crispyduck
JimbobUK wrote:Well, I tried this on the way home tonight... Hmmm... All but two of the IAM addresses are way off / invalid values...
But...
0x020124 is stuck at 16
0x020168 is stuck at 8
So, I dunno.... Perhaps I should reset the ECU, and see what these two addresses do??? What was the seed value after reset?
As you say could either. I suspect it's the first one (my address is at 0x020120). If you reset it will either set back to 8 or 10 as the initial value (mine is 10 for a Euro MY03 WRX). If you drive slightly on increasing boost for around 3 or 4 seconds you'll see the value increase quickly if all is well. Mine goes to 16 within one light boost drive say in second or third gear.
Hope this helps.
-Steve.
Posted:
Mon Feb 06, 2006 11:56 pmby xswrex
Jimbo, 0x020124 will most probably be the address for IAM. I have the AF531-7555 ecu which (was) the latest bugeye (02) WRX ecu used in Europe.
Posted:
Tue Feb 07, 2006 2:13 pmby JimbobUK
Yup, 0x020124 is defo the IAM address for the UK 01 WRX [AF530-7554]...
Reset the ECU and drove home... This address started at 8, and then quite quickly stepped to 12 and then 16.
When I plot a graph of IAM and knock correction, the envelope of the knock correction quite obviously steps up with each step in IAM.