VemsTune and 1.1.6x release

[Tony C]

Tony, its not going to work without propper cranking enrichment values which you currently do not have. That is the difficult time consuming bit, trying to find those values.  From this thread, it would appear that the cranking enrichments in 1.1.6x are a whole world appart from older firmwares.

Im sure Dave will be able to extrapolate from the values he uses in relation to the size of injector. The engines are similar enough to require similar amounts of fuel for cranking, its just working out the actual pulse width for the injectors you have, to give the same amount of fuel at cranking, then you can fine tune it from there.

Dave has offered to pop up and see me next time he is on the main land to see if we can get 1.1.64 running on the v8,
will keep you all posted how it goes :-)

[Arthur]

Can it be that the pwm idle solenoid is quieter with 1.6.3?

[AVP]

what do you mean quieter?

[SamSpade]

what do you mean quieter?

The IAC valve rattles because of a firmware glitch.  The pulses in the first channel (for a dual solenoid setup) gets truncated intermittently.  Also, the implementation is a kind of PWM that's not suitable for an IAC valve.


Related threads here:
Idle PWM - rattling sound?
Erratic IAC dual-solenoid output

I haven't bench tested 1.1.6x yet to see if the issue is still there.

[AVP]

is that for the dual solenoid mode?
in audis this is not used and works fine on 1.1.27 with the use of i diode

[gunni]

Then your lucky. I have tested on a two wire ford ICV and it was terrible.
I´m hoping that the new firmwares will have static frequency.

[AVP]

at least add it on, dont mess around with a PWM that already works on some cars!!!  :D :D

[SamSpade]

How do we contribute to source code? I was a hardcore C/C++ programmer and microcontroller geek back in the day so I may be able to help pinpoint the problem and a possible fix -- and of course, make sure current setups won't get messed up with the changes.

[AVP]

on the cranking/warm up/idle settings, when you change the coolant bins on the curves, they all match. However on the idle PWM, they always stay set. Which one of these 2 facts is telling the truth about the CLT temp?

if i alter the coolant bins on all those areas, will the idle PWM follow, or will it stay on the already set values under idle IAC PWM settings?

[GintsK]

at least add it on, dont mess around with a PWM that already works on some cars!!!  :D :D

In fact every installation have this interrupts. But some valves and settings prevent mechanical noise.
If you set pwm frequency to 0 and manage throttle stop so that valve duty is close to 50% - most probably valve will be quite on current firmwares.
Andrey already has code for true PWMing. It should be implemented in some of next firmwares

[Arthur]

Well with 1.0.73 i never wandered if the solenoid worked. I could here a soft brum

Now with 1.1.63 I can't here it but it seems to work fine.

[mattias]

The recent firmwares (1.1.65+) have the new PWM code for IAC valves that seem to work. I haven't tested it yet but will once the code for cranking enrichment changes to work with northern sweden winter temperatures, possibly in a few days.

[SamSpade]

... Andrey already has code for true PWMing. It should be implemented in some of next firmwares

The recent firmwares (1.1.65+) have the new PWM code for IAC valves that seem to work. I haven't tested it yet but will once the code for cranking enrichment changes to work with northern sweden winter temperatures, possibly in a few days.

Excellent! I hope it fixes that nasty interrupt as well.

[dainiuxsky]

Welcome,
Knock at what works from version 1.1.58?

[mattias]

Welcome,
I noticed that the 1.1.61 version of the left konck since 1.1.63 Boost controller left to inj-5 "there is no activity"
Here with me as one?

Wut?