Nistune Forums

Just wondering what is going on with regards to development these days ..
(will we see new exciting features?)

Unfortunately been delayed by PC issues including corrupt hard drive on Sunday (lost some latest changes but nothing major) and busy last two days but now got that out of the way and putting release together and testing. Feature list will be available soon. Mainly bug fixes and few minor GUI changes currently

Sorry about the issue ... but I am sure you have plenty of Laptops at hand?

It feels like ages since the last release, and I am looking forward to the GUI changes and the knock beep

Yeah I have several machines with subversion checkouts on them and a main server. Problem was the main server was freezing up randomly (due to bad memory stick I think causing trouble) and required a Windows reinstall which fixed the freeze issue but then got RAID driver problems happening following this. Took an image of the previous Windows install so restored that and comparing trying to work out what registry settings had changed

Anyway most of it is fixed and redoing changes from Sunday (not all SATA are hot swappable... the NTFS root got corrupted on my working drive). Next time I'll check all the work in before messing around

sounds like you need to virtualize your storage or backup solution in the cloud.

Everything then becomes dependent on being connected to the net. Sometimes I work remotely and having that dependency introduces more problems. Subversion works well, just the RAID card I'm using at the moment is not that great

true, true, maybe a D.R. site at PLMS is the go.

If you are using a Server OS, probably stick with soft raid. simpler/easier to recover from.
so many low end raid controllers are just flacky. I didn't mention say adaptec did I. -aarrghhhh-

Yeah this one is a fake raid (RAID5 = mirrored and redundant) ... so hardware controller but software drivers. Win7 has imbuilt raid but this one is still running XP for various reasons including legacy software and testing (Xilinx etc). So wanted to upgrade the machine but still need 32 bit and parallel port for EPROM/Xilinx

The raid driver have some issue that makes it dirty on each shut down. Two years ago I managed to work around it, but after a reinstall forgotten what I had to do

Over the last week more updates and fixes going in. I've done some thorough testing of the auto AFR tuner functionality and its working a lot nicer now with pulling the fuel map against the target AFRs

Still to go through VE and VQ map adjustment with these so those tickboxes are unavailable for now. I'll put up a list with the release but trying to get through all the testing at the moment

Sounds good ..

Will the autotune function also be able to adjust the injector flow rate?
I assume at the moment you 'just' change the fuel map entry, which might actually 'bake in' wrongly set injector parameters (or wrong VQ).

When do you hope/plan to get this out?

Just the fuel map will be adjusted

If you get the injection multiplier wrong then the whole map will be pulled out of wack, so its up to the individual to make sure they get their injection multiplier right

Whilst I did think about it, there is no easy way to get it right since the AFRs vary dependent on what you want in the map so this will be manual

Given this and a fair bit of driving yesterday, there is no way that you can really use the autotune over your entire fuel map, there are spots you just are not going to hit easily on the road (or even the dyno).

You cannot stay in high load and rpms for long to get it to auto correct in some situations (or should I say safely...)

Map smoothing is another requested feature which I want to put in there but first resolve rest of the bugs I have on the list

G'day,

Yes, if the injectors are incorrectly set the whole map will be pulled in either direction.
I was more thinking of a function to estimate injector flow rate based on the error deviation between
actual AFR and computed AFR.

Autotune might be nice but possibly difficult to implement?
Also the various enrichment tables would interfere, wouldn't they?
And then there is the lag in the feedbackloop as such.

Possibly if you held the car at a steady point it would be worthwhile?

Map smoothing sounds good, will that be based on a gaussian distribution ?

Another interesting function would be map expansion (load scale), this could be done by some smart algorithm.
(I did something in Excel)

Cheers

Matt wrote:Just the fuel map will be adjusted

If you get the injection multiplier wrong then the whole map will be pulled out of wack, so its up to the individual to make sure they get their injection multiplier right

Whilst I did think about it, there is no easy way to get it right since the AFRs vary dependent on what you want in the map so this will be manual

Given this and a fair bit of driving yesterday, there is no way that you can really use the autotune over your entire fuel map, there are spots you just are not going to hit easily on the road (or even the dyno).

You cannot stay in high load and rpms for long to get it to auto correct in some situations (or should I say safely...)

Map smoothing is another requested feature which I want to put in there but first resolve rest of the bugs I have on the list