Config Help.....

[Tony C]

cheers mate, thanks for that :D

[Tony C]

well while its quite i decided to rig up a stepper control valve loom here indoors and get another stepper housing and do some playing,
I was correct the stepper is not working,
when you power the vems the stepper goes out (air way shut) and stays there,
did a bit of playing tonight and now when you power the vems up the stepper goes out then comes back to the open airway position  ;D as per the 1.1.44 firmware,
i found that by turning power off stepper after steps function to disabled it burst into life  ::) 8)

hope to pop round to the car tomorrow after work and see if she will idle unaided on 1.1.74 now  ;) ;)

[Tony C]

its lives mwah.
sorry about that  :-[
car started first flick and idled perfect at 1050 till warm then dropped to 900,
idled smooth while cold bit lumpy towards end of warm up then when cold start kicked off smooth again,#
and she will rev to a point then feel like its holding back,
if i get a log tomorrow evening could one of your good selves squint an eye over it to see if its something silly please?

[Tony C]

here you go a datalog as promised along with the vems files.
http://www.capriracing.co.uk/vems/capri.zip

i thinks its too rich and its bogging,
but you guys will know what to look for  ;)

[gunni]

Why is EGO correction down to 80%?

When in the log is it not revving up like it´s holding back? are you driving or in neutral when the engine is reving in the log.

[Tony C]

no idea why ego is 80%
and yes stationary in neutral

[gunni]

first remove so much closed loop control, keep it at about 5% for the time being.

and take it for a spin and see how things are.

[Tony C]

i gather you mean change the lean limit from 20 to 5% yeah,#
if so thats now done, will have to wait for tomorrow evening to try it.
thanks for that, anything else i shoul look at?
will that 20% lean limit be upsetting the revving? as in it seems to miss flutter when you floor it stationary

[gunni]

it shouldn´t unless your misfiring from to much fuel.

best to drive it a bit and see how that goes.

Where are you based ?

[Tony C]

Based near Newbury, Berkshire mate

[dnb]

Ego is probably at 80% because the VE map, or the temperature compensation is wrong or the wrong temperature sensor curve(s) have been selected.  This can be tested by tweaking the VE down a bit and double checking the temperature readings look sane.  Check the log at the time when the thermostat opens and see if that is the right temperature.  (not sure what stat you have - lots of different Rv8 ones out there.)

[gunni]

Based near Newbury, Berkshire mate

I´m in Marlow if you ever want the thing finalized and all these issues ironed out.


;)

[Tony C]

ah not that far really from me then gunni,

dnb - temp compensation????
89C stat fitted,
what temp sensor you using dave? im using the stock rover efi one,
and have you your temp curve settings? as ours should be roughly the same if using the same sensor.

[dnb]

I'm using a standard Rover sensor.  It isn't the same as the standard curve supplied with the firmware, so I'll send you what I use.  (Unfortunately I haven't worked out how to patch it in with vemstune yet)

Temperature compensation is the table that is indexed with tps and iat.

[Tony C]

ah right ok mate thanks,

also just halved the ve table,
compared what i had used on v1.1.74 with 1.1.44 and its was wayyyyyyyyyyyy out, had settings of 157 when it was only 52 on 1.1.44 ve table,
so have set the table near identical to the old firmware ve table, god knows what i was doing that night when i did that table :-(
willhopefully get the car running on the new ve table tomorrow and if weather holds will take for a quick spin up the road and do a log.