1.1.44 alpha released

[Tony C]

just to add my probs to the list using this firmware version,
when cold while cranking if the car fires then stalls and you re-crank the engine to start again i get lots of kick backs until it fires and runs,
if it fires straight away from cold have no probs and when cranking from hot no probs,

[Grant]

Hey just curious,

1.44alpha has been pretty reliable for me.  I still have issues when cold starting, but I'm not positive it's not something that I'm doing wrong.

I do have a general question though:

Do any versions support acceleration enleanment?  I know AE works well, but whenever I close the throttle while driving around town, the mixture goes way rich, then stabilizes.

I think this is why Megasquirt people have also created acceleration enleanment.  Some people report 10-20% fuel savings from this feature while driving around town.  Does this firmware support it?

[MWfire]

Can you send me config(msq) to damir.muha@fer.hr so i can try to adjust cranking and AE?

[Grant]

I sent you my MSQ.

For me, I don't know if there is something wrong with cranking or not. It might just be my lack of experience.  Hot starts are great, cold starts are fine when outside temp is above 11 celcius or so. 

[Tony C]

just a curious question:
after tring to load  v 1.1.64 on the ecu and having no luck with getting the car running we reverted back to 1.1.44,
today was the first time we had chance to road test the car again after the firmware swap arounds,
car fire as normal while cold today went for a 20mile drive and parked up,
came back to the car about 5hrs later, tried to start it and it tried to fire but didnt,
tried again there was a backfire in the exhaust and it fired,
BUT we noticed that everything seemed to be richer now,
let the car run up to temp, and lambda is usually 0.92-0.94 at idle,
im now seeing 0.86-0.88,
and same while driving,
where cruising we were seeing 1.00-1.01 its now reading 0.97

any ideas?
map sensor going?

[dnb]

I don't think there is anything to worry about.  The way lambda is reported to Megatune was changed in 1.1.44 so that it could be made more precice.  There's nothing actually any different with the car other than it is now telling little lies to MT.

[Tony C]

phew thank god,

can't wait for you to get 1.1.64 sorted on the v8 mate :-)

[dnb]

Might be 1.1.65 now.  How's the oil issue progressing?  I doubt I'll be too long before I'm on the mainland.

[Tony C]

hope to have an answer on the oil issue next weekend,
have made the tools for removing the valve caps while heads still on engine,
hoping changing the stems seals on them two suspect cylinders work, if so we are good to go,
failing that its engine out, but will wait till you have done your bit if it has to come out mate,

[Tony C]

I don't think there is anything to worry about.  The way lambda is reported to Megatune was changed in 1.1.44 so that it could be made more precice.  There's nothing actually any different with the car other than it is now telling little lies to MT.

ah just read this bit again,
and realised i never said that im also running a standalone vemstune gauge,
which is also showing different readings from before,
And i know that aint got anything to do with 1.1.44  :-)

[dnb]

Is the stand alone gauge getting its data from a separate sensor?

[Tony C]

yes mate in the other bank,
and both are reading the around the same give or take a bit but both showing around 0.88 at idle now instead of 0.94

[Tony C]

right i think,
and i say THINK>>>> i may of found the problem regarding rich idle,
one of the plug leads was not seated fully home onto the plug, and must of got dislodged the weekend when we were giving the car a once over in the garage before returning home, and thus only firing now and then when it made contact.
lambda is still not 100% but its at least in the 0.9ish region now at idle and not 0.88
will check the rest of the leads this weekend,

[Tony C]

right took car for a drive tonight,
seems to be a bit better while driving.
but after 5 mins at idle it started creeping from 0.94 back to 0.88 for some reason.
and when vieving the 3D VE table the kpa was jumping around all over the place,
blip the throttle and it would level out around 55kpa again,
then after 5-10 mins every so often it would start jumping up and down again as if reving the car rapidly,
whats going on?
been fine till now :-(

[Sprocket]

Logs?