Cold start again.. And some other too

[Tcal]

It looks like this:
h[0]=02 08 04 01 10 20 40 80

But should  that camtrigger be in use when sequential?

[rob@vems.co.uk]

No you can inject sequentially without the secondary trigger.  You know TDC and BDC position, but not the engine phase, so when the engine is at TDC either 1 or 4 will be firing and the other will be on its exhaust stroke, if you inject 1 or 4 at this point then it will be on a closed valve.  Injection starts on the trigger tooth so the start point will be roughly around 60deg BTDC (or BBDC).

[Tcal]

So if i enable that camtrigger it knows straight what´s the next cylinder to inject?

What´s the best WORKING firmware you could recommend? 1.0.73?
I´m running on Cop´s.
Planning to use boostcontrol in future too.

[rob@vems.co.uk]

It will know within two crank revolutions which cylinder to inject - but its not so much about injection but ignition for direct fire of COPs.

I stick with 1.0.73 for 36-1, 60-2 etc, and 1.1.18 for the Nissan triggers.

Boost control is available in both those releases, hopefully by the time you're ready to use it the 1.1.29 version will be tested and released.

[Tcal]

So if i upgrade to .73 i´ll need to change that h2 table
from h[2]=05 04 05 04 01 03 01 03
to    h[2]=50 40 50 40 10 30 10 30
Right? Anything else?

I downloaded that .73 and it looks ok..
What´s the difference between generate-config and generate-configwithdefaults??
I looked that Primary trigger settings there are some difference to .53 version, what do i need to change there?

[rob@vems.co.uk]

generate config with defaults uses two files to set some specific settings in the config, one blitzes the ALS settings to make sure its turned off, the other ensures that the factory wideband settings are in place.

There shouldnt be anything to change regarding the trigger settings, the extra items only relate to you if you have some of the special filters enabled.

[Tcal]

So will i need to leave those 4 to zero or what does they mean??
I have now in .53
Tooth relation normal 181
Tooth relation missing 118

I opened latest msq with that .73 MT and there were next values.
Tooth normal relative min 31
Tooth normal relative max 169
Tooth missing relative min 200
Tooth missing relative max 338

They aren´t correct if i understand them right?

Does that crank min. period effect how to starting, it´s now setted to 1280
I have not tried to upload that firmware yet.

Played with those ASE values today, now having ASE 30% and scaling 70..
Let´s see tomorrow how will that effect..

I did try that Idle PID controller too, for some reason i didn´t get any changes to idle ,when i played with those values.
Should it usually be enabled, or is it just for stepper iac or something.?

[rob@vems.co.uk]

Leave the values as they are, although they're not used its better to leave them well alone.
Crank min period is related to the rev limit of the engine, its calculated by the number of teeth on the trigger * max rpm/60
Its a filter to reduce potential noise problems - if a trigger happens before minimum trigger period then its clearly noise and should be ignored.
If you set it to zero then it turns the feature off.

Rob

[Tcal]

Hmm. I did find something interesting today.
It´s about that IAC valve. When i turn ignition on and look in the valve it´s closed ,but not always..
If i knock that IAC a bit, it releases that valve to open. and then it moves ok..
If i move that valve with my finger when it´s powered and closed, i can feel that something is blocking it to start move freely, but again when it´s moved a bit it´s okay again.

If IAC is unpowered then there´s nothing blocking it when moving that valve by hand.

That´s could explain my coldstart issue quite much...

I´m thinking that there could something between that magnet and armature that block´s valve movement when powered...
Or could it be that there´s not enough power to start moving that valve.. Hmm no.. it shouldn´t be possible...

That IAC valve (2-wire) is made by BOSCH and it´s part number ends 516, it´s quite common in motronic equipped vehicles.
i´ll start to hunt for a better one...

[Tcal]

AARGH !!. Just solved that iac problem.. And probaply that cold start issue too...
There should be an brass bolt holding that valve almost closed when not powered.
and if that iac has failured  so  engine is still running on raised idle.

Somebody has changed that brass bolt to steel one for some reason.
Valve were stuck in the bolt because it´s magnetic .
When bolt was off valve moved perfectly.

So when ignition on, valve was closed because of that.
First start attempt when cold, not enough of air (valve closed)
That unsuccesful start released valve from bolt.
Now valve  opens as it should .