Well, I personally have been dreaming about this for years and it is finally available from Vishnu Tuning for Evo's and soon for STIs. I really do hope it will also be available one day for the Z's.. this could be very big.

S.M.A.R.T stands for Self Monitored Active Realtime Tuning. Basically, it's a piggyback (Xede in this case) that has a basemap with target parameters (timing, AF etc) and the SMART software alters these parameters within a range of values that you set.

So basically, you don't have to tune conservatively for a "safe tune". You tune for worst case scenario and a best case scenario for ultimate performance. The software bridges the two realtime while you drive. It adjusts itself to the weather, to the octane you're using, to your driving style.. If all goes well, it goes towards the best scenario tune.. if the engine heats up, goes lean or knocks (or whatever else that is not supposed to happen), it backs up to the worst case scenario tune.

As Shiv from Vishnu Tuning says: "What is unreal is that these Active maps basically do the job of a 8 hour custom tune on a load bearing dyno"

Yes, active maps!!! Again, active maps!!

You load a base map.. and.. you go! That's it. No tuning for winter, then for summer, then for 100 octane, then for C16.

More info at:
http://forums.evolutionm.net/showthread.php?t=146176

and at

http://forums.evolutionm.net/showthr...1&page=3&pp=15

I really do hope this will one day be available for the Z.. Imagine not having to build your engine!!!!! Maybe I am exaggerating.. or am I??? Think and flame away!

 

Great idea. I don't think it will happen on the 350Z though. I had talked to Brian@Technosquare and I was just asking about storing multiple maps on the OEM ECU (for different power settings). He said the EVO ECU is the only ECU he's seen/heard of that can do that.

It would be awesome though. It sounds similar to the Autronic SM4 Autotune feature, it will autotune itself for AFR, however, you must tune for ignition timing. It also does not work on drive-by-wire.

Speaking of that, when are some more throttle-by-wire standalones going to come out?? I don't think companies are going to go back to throttle-by-cable anytime soon, seems like the aftermarket industry needs to catch up with the technology that is going to be implemented into the next (this generation, basically) generation of cars (that will be popular enough for a standalone).

 

we already have drive-by-wire (DBW) standalones already.. HKS Fcon, Motec and I guess soon, we'll have the AEM as well.

Subaru STI is also DBW. I think the days of DBW being a problem are over..

As far as difficulty of application, I don't think the Z's ecu is any harder than the STI's DBW ecu. So I would think it could be made for the Z if it can be made for the STI.. but then I am no expert in that so I don't know.

This SMART software works with a piggyback (Xede) but also has almost all of the features that a standalone has. Much like the new E-manage Ultimate.

 

This is a great idea but it is still a reaction to a problem. This coupled with a TS reflash might be an answer. Shiv still flashes the EVO ecu's before he does uses the XEDE. I hope this works but the xede doesn't work great with can/bus systems.

 

Do you know if the STI is a can/bus system? I'll ask around to see.

 

Right. There are quite a few that aren't jumping on board though.

 

Dont forget, the new eMange Ultimate has target A/F ratio tuning, and bunch of correction maps as well. Should do nearly what you have just described, and its available now via GB.

 

yeah ditto on the Emanage Ultimate, that's exactly what I was thinking - target A/F and timing

to this day, I'm still baffled how slow ECU's are at adjusting on their own. You'd think we wouldn't even have to tune them other than if you're doing FI

It seems like detonation should NEVER happen for any length of time over 1 second, but ECU's let the car detonate away and are slow to pull massive amounts of timing to prevent the detonation from going on

 

Everyone is soon to forget that ECU's are programmed for "All Environments" ie very timid(not on the edge). Most new NA cars disreguard the knock sensor at WOT under 1500 and over 3500 rpm's. FI cars are a little better.

 

And stock ECU's like to be "Certain" there is knock, or other anamolies before taking action and throwing codes. For instance, one misfire will not trigger a CEL, but misfires on two trip occassions will. If the ECU responded to every little change in condition, the car would probably run badly.

Also worth noting, that a little knock or other anomoly does little harm to an NA motor, but with cylinder pressure nearly doubled, and higher thermal loads on the motor, a little knock on a high power F/I car can do a lot of damage very quickly.

 

Hi guys,
The XEDE does work on the 350Z. As should the SMART system. I imagine that it could come in real handy in turbo/supercharged cars where you could tune aggressively and still have the XEDE make realtime fuel and timing adjustments per every single engine event based upon wideband input and knock signal. If there is enough interest, I would certainly consider releasing a 350Z application. Plug and play harness and all.

Also, the active maps are nothing like the simple closed loop fuel control autotuning that is offered by many stand-alone system. The SMART systems relies on a constantly running algorithm and multi-nested maps to acheive the desired adaptive fuel and spark timing activity. Feel free to ask any questions you may have.

Cheers,
Shiv
www.vishnutuning.com

 

Hi Shiv, I have met you before through your tuning sessions on the east coast through Eric and Mohammad's WRX and Evo. You have demonstrated the capabilities of the XEDE unit and I am truly impressed already.

Now that you are mentioning a possible 350Z application, I am very interested and excited to hear more about its capabilities. You will see that Turbo XS has just released their UTEC and we also now have the E-manage Ultimate, there is a separate post for each on this forum and you will see how much information we have available on those two. I think it would be really nice if you could give us more detailed information on Xede and what it's advantages are compared to other systems already available.

I am personally very interested to try out the Xede first in normally aspirated form and later on in the spring 2006 in FI with the SMART system. Please let me know if I can be of any help on the East coast. I am looking forward to hear more about this, good luck!

 

Having a FI Z i am very intersted. As I like to run higher octane on hotter days and try to monitor everything very well. I know Vishnu is very respected in the Evo market. An active map the adapts to all variables would be sweet. That should be the answer to some tuning problems.