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Microtech What do these options mean?

Old 02-03-06, 02:47 AM
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Question What do these options mean?

As the title says just wondering what these options are for on my Microtech ECU.

IDLmap

Opt Dwell


IDLmap = 1320.
Opt Dwell = 30

but I dont know what it means!
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Old 02-03-06, 05:46 AM
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i got this from the lt/mt manual

Dwell
The Dwell feature has been factory set, and should not be adjusted unless otherwise specified.
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Old 02-03-06, 05:49 AM
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yea lol thats bloody useful haha.. i think i read that too lol

this ecu has passed thru god knows how many hands and settings change likewise lol :P

Im not sure what IDLmap is, i was thinking something to do with IDLE at first... the way it read i thought maybe its how you set the idle speed, but idle speed is set with the TB.. MAP = manifold absolute pressure... but 1320 isnt a value that really fits in there then :| stumped heh

i have done a google search and found nothing. this is on a digi 1 pro, but im pretty sure later ecu's are similar.

edit: also wondering what pump1 dwell means heh

edit2:just found some more info:

Dwell
The amount of time distributor points remain closed between openings.


so something to do with timing..

still unsure about IDLmap - its just weird

Last edited by H4Inf; 02-03-06 at 06:04 AM.
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Old 02-05-06, 03:45 PM
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i take it your ecu is a early MT8 or a DIGI??

idlmap is for what RPM below it uses the idle map, great for ported motors.

dwell is the charge time for the coils
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Old 02-05-06, 09:07 PM
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ahh excellent! thanks, yes its a digi.

ignitions not hooked up so dwell is irrelevant then. IDLmap makes sense - i will look into what I can do with it Cheers!!
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Old 02-08-06, 04:27 AM
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Question

Originally Posted by 10sec rx7
i take it your ecu is a early MT8 or a DIGI??

idlmap is for what RPM below it uses the idle map, great for ported motors.

dwell is the charge time for the coils
hey 10sec_rx7, just been thinking about a problem I've been having and I think it may actually relate to IDLmap, you sound like you're familiar with it.

So with idlmap, if I am ever below that RPM, it will run off the IDLE map settings in the ecu right, not the loadmap?!

See problem I am having is I go to take off from a stop, bring clutch out and suddenly revs drop when I bring the clutch out (sometimes stalls)... I'm guessing its switching to the idle map just as i lift clutch and revs drop below 1340 (where its set)... something like that

just want to confirm exactly how idlmap works, when it is active etc.

cheers

Paul
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Old 02-08-06, 04:02 PM
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yes that is how it works,
generally i would set the 00hg the same for both idle and load maps this will fix that problem
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Old 02-09-06, 02:20 AM
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hmm my 00"hg values are the same -- 00 hg is at WOT though.. right?

when my car is idling, vacuum is reading between 16-19"Hg - usually at steady 17" - and the way the digi works i believe is it grabs the closest number to that and uses its value. so it would be one of the following:
"hg ---- LOAD ---- IDLE
15 ---- 1.88 ---- 1.75
20 ---- 1.68 ---- 1.62

Complete Map:
"Hg ---- LOAD ---- IDLE
0 ---- 3.5 ---- 3.5
5 ---- 2.82 ---- 2.68
10 ---- 2.25 ---- 2.06
15 ---- 1.88 ---- 1.75
20 ---- 1.68 ---- 1.62
25 ---- 1.56 ---- 1.44
30 ---- 1.38 ---- 1.25

Any enlightenment would be sweet. I've turned IDLmap to OFF now, and will see what that does tomorrow.. need to get my head around it all.

Cheers!
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Old 02-09-06, 03:34 AM
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Heres a table of the values and a graph if it makes it any clearer:
http://rx7.pw.cx/photos/base%20figuresj.JPG
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Old 02-09-06, 05:07 AM
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you idle map will be a little lean in the 10 and 15 points, fatten it up a little and it will like to drive off a little better,

it will run fine with it turned to off, just make sure you get all the mixtures right in the 15 10 5 0 maps the 20 map will be used for idle
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Old 02-09-06, 05:36 AM
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just to clarify.

i am guessing that the idle map is used at any time when the TPS = 0% or when the rpm is below the IDLmap setting, correct?

Thanks so much!!
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Old 02-09-06, 03:52 PM
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thats correct
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