Engine Management System's

[r33_racer]

go autronic mate. You wont regret it. SM4 all the way.

Just a side note, does anyone know if the actual knock unit is available yet. Cause when i got my sm4 the anti knock unit wasnt actually out yet and that was about 3-4 months ago.

[discopotato03]

Hi TomTomTuning , I'm a little curious what it is that falls short in your opinion of the Power FC . I'm not trying to change your mind but I'm wondering if theres something the PFC can't do or is a mass airflow metre thing .

BTW guys , very interesting to hear that the Autronic SM4 can use a hotwire or mass air sensor as the load sensing device .

If Aubers (sp ?) mob has got the circuitry in that ECU to suit a wide range of MAF sensors then thats a big plus . If I had to go stand alone and the SM4 can do it that would be my choice . The other thing I think is important is to be able to READ properly the Nissan 360 degree optical crank angle sensor . I don't accept the idea that have an approaching TDC reference pulse and 6 slots (1 for each cylinder) is acceptable nowdays .

I did speak to Justin when he worked for EFI Technology (Haltech) and they were working towards their box talking directly to the Nissan 360 deg optucal sensor type CAS . When the Autronic can do it and use MAF sensing and do sequential injection and drive 6 coils I'd consider it .

For what I want which is road and possibly a few track days eventually the PFC has me covered . The Nismo 550cc injectors I have and Z32/Q45 MAFS are an easy upgrade for me .

Full Race Geoff tells me that the Apexi tuning software is fantastic and behind several million others I'd like it too - in English .

Interesting discussion , cheers A .

[tomtomtuning]

Hi TomTomTuning , I'm a little curious what it is that falls short in your opinion of the Power FC . I'm not trying to change your mind but I'm wondering if theres something the PFC can't do or is a mass airflow metre thing .

BTW guys , very interesting to hear that the Autronic SM4 can use a hotwire or mass air sensor as the load sensing device .

If Aubers (sp ?) mob has got the circuitry in that ECU to suit a wide range of MAF sensors then thats a big plus . If I had to go stand alone and the SM4 can do it that would be my choice . The other thing I think is important is to be able to READ properly the Nissan 360 degree optical crank angle sensor . I don't accept the idea that have an approaching TDC reference pulse and 6 slots (1 for each cylinder) is acceptable nowdays .

I did speak to Justin when he worked for EFI Technology (Haltech) and they were working towards their box talking directly to the Nissan 360 deg optucal sensor type CAS . When the Autronic can do it and use MAF sensing and do sequential injection and drive 6 coils I'd consider it .

For what I want which is road and possibly a few track days eventually the PFC has me covered . The Nismo 550cc injectors I have and Z32/Q45 MAFS are an easy upgrade for me .

Full Race Geoff tells me that the Apexi tuning software is fantastic and behind several million others I'd like it too - in English .

Interesting discussion , cheers A .

Nothing against the PFC at all.

I was always interested in doing a flying lead harrness to get rid of alot of the wiring mess.

And the PFC is a little harder to come across now adays.

I am also not sure if a Z32 MAF will support the power i plan on making.

I have a spare block i am building up, and plan on putting that in the car soon.

Thats why i was looking at haltech/autronics.

My car will also be Street/drag, i also have spoken to Geoff a couple times and he swears up and down by the AEM EMS...

[discopotato03]

You probably know that the Q45 MAF is another larger option for the PFC over the Z32 MAF .

As a long shot JWT was good at cracking Nissan ECU's and using the Cobra MAF as an option but I'm not sure if Jim has a real time interface for factory ECU's .

I've never found the time to look int AEM's EMS and the next (if I can find the time) will be the Mega Squirt but again if it locks you into a MAP sensor I don't want to know .

I did have a quick glance at Autronic's site and I'm pretty sure the SM4 is a map based system so no good to me . Sorry for being so one eyed but IMO the Mass Air Sensor takes so much of the correction work (air temp/mass/density) out of tuning aftermarket computers that its not funny .

Thoughts , cheers A .

[shanef]

Reading on the uk gtr forums, a few guys running the AEM EMS were having timing issues with the std CAS i.e timing was fluctuating ~1deg up in the rev range. They overcame this by using a trigger disk missing tooth setup on the crank.

I'm trying to source someone in brisbane who is running this type of setup (with the autronic SM4), i rang tuned a week back and they said they knew of 1 guy who was running one on his gtr, but im yet to hear back. Ideally i'd like to run a crank/flywheel trigger disk, and use the CAS as a reference.

Food for thought

[tomtomtuning]

There is another system i have been looking at. Its called VEMS

It originated from megasquirt. but alot better now.

it uses a modified version of Megatune.

http://www.vems.co.uk/

But i dont wanna cheap out when it comes to an EMS.

Haltech E11v2

Autronics SM4

Motec M600

MicroTech LTX12s

Any one better then othe other?

Edited July 6, 2007 by tomtomtuning

[MBS206]

I'd also say look into the Adaptronic.

Will be having mine fitted and tuned very soon.

[tomtomtuning]

I'd also say look into the Adaptronic.

Will be having mine fitted and tuned very soon.

I decided on the Haltech E11v2, I should be ordering it next week.

[donkey_punch]

I decided on the Haltech E11v2, I should be ordering it next week.

dont do it, i have a E11v2 and wouldnt use another one if haltech paid me too.

get an autronic or motec and be done with it.

[discopotato03]

Out of curiosity what didn't you like about the E11 V2 . I found that the software couldn't quite achieve what some features of the Autronic SMC I used could but my last Haltech was an E6 which is going back a fair bit .

So much of how well engine management works depends on how well its load sensing device can signal whats going on inlet air wise , and in an age where inlet manifolds are being designed to suit air feed requirements pressure fluctuations IMO aren't a good indication of airflow through the system .

You thoughts on the E11 ? Cheers Adrian .