So I have been looking around and researching all this stuff about tuning and have confused myself more than ever I think. Anyone who can help it would be greatly appreciated.

I have a 6th gen for reference, I assume there is a difference in tuning compared to a 4th or 5th gen.

1. Do you need a wideband 02 sensor to get accurate A/F on a dyno or can they do it with the stock narrowband.
2. Do you replace your stock narrow band or just add on an additional wideband for tuning.
3. Is there an all in one system for datalogging and tuning. I can't seem to find one.
4. What would be the most flexible datalogger for windows.
5. Anyone using systems besides apexi - greddys emanage ultimate for instance. What are the pros/cons, what is everyone using.
6. Any other general help or insight would be great.

Thanks

 

1. Do you need a wideband 02 sensor to get accurate A/F on a dyno or can they do it with the stock narrowband.

Yes you do need a wide band o2 to get a accurate af reading throughout your rpm range..

2. Do you replace your stock narrow band or just add on an additional wideband for tuning.

You add.. the wide band in.. leave the narrow band o2's for your ecu..

3. Is there an all in one system for datalogging and tuning. I can't seem to find one.

depends, some wb af meters are able to datalog while other just display. Tune your af you need a safc; emu

4. What would be the most flexible datalogger for windows.
plx devices; zeitronix; greddy emu software..

 

Thanks for the help! So is it worthless to have a dyno run without a wideband. I was looking to get a baseline A/F with hp/tq. Can they just interpolate the a/f thru the voltage readout on a narrow band or is it impossible to do. I was also looking at the technosquare flash to open it up a bit before I tuned. If the stock system always trys to maintain 14.7 then how do they flash it adjust the curves? Or can they only adjust the WOT map as it runs open loop and ignores the 02 readings.

Also anyone have experience with the zeitronix. It seems REALLY cheap compared to the rest and has the best datalogging I have seen. Am I missing something.

 

No, because when you do get a WB, you'll have to start the tuning session with a baseline. Tailsniffers sometimes read lean, so I would take it as a very vague indication.





I don't think they would have any reason to change clsoed loop maps since it's only on the highway and/or under very light load. And the o2 sensors will do what they're taught to do... 14.7:1 ...

Not sure if that's what the can only do, but why bother with clsoed loop...

 

So if I get this all correctly it goes like this:

1. When putting around in closed loop it doesn't matter if you change the A/F because you want to be at 14.7 for optimum emissions and fuel economy.
2. WOT is the only time you really want to change the A/F because you want to make sure you get a richer mixture to lower engine temps and give it that extra boost - making sure you use a high octane 92/93

The "open it up a bit" was in relation to the the throttle being fully open, 7k redline, and no governer. Also they will adjust the A/F ratio based on current mods you have(I no it's no sub for a controller but you got to start somewhere)which I am assuming is only valid at WOT.

 

If you're going to start somewhere, get an AFC + WB.. That will equal the price of the TS ECU.

And I still do not see how they can adjust A/F for each indivudual car using a mod list.

I would think tehy would need a A/F plot...but not using a tailsniffer.

There's always the EMU/EMB alternative. More 'tuneability' than just the cookie cutter method and even the AFC deal. But a WB is a must.


Must haves for serious people are wb02, OBD-II scan software, and either a AFC or EMU...And of course an old laptop ...

 

I will be getting both the TS ECU and a AFC/WB I am just researching everything before I pull the trigger. They also like you to send in a dyno run with A/F to have a base line to tune, but appearantly have done enough cars now that they can give you a rough tuning that's better than stock. You will need a stand alone controller to realize full potential. What are EMU/EMB and why would I need an OBD-II scanner?

 

I'm not sure if the A34 is the same, but if so, check their websit, and look up their L-spec option. This extends rev limit and supposedly fixed the throttle closing...but does not alter a/f. This is a bit cheaper (for the A33B ) than the full spec, but I'm not sure nor have I heard/read anything like that as an option for you guys (A34 aka 6th gen)




I know, I've dealt with them before.

Sure they can... but why, if you are getting an AFC anyway?

I would have never known...

A stand alone is a whole entirely different story here... No one on this board has done it, and if they have they have not posted about it....compelte and running.

Do not get stand alone mixed up with piggyback please...

EMU = Greddy E-Manage Ultimate. And EMB = Emange basic or blue. Check for greddy emanage and you can DL the PDF files and learn a lot from reading (RTFM).


I think an OBD-II software w/ data logging is a good idea so that you can monitor important vital signs that play a role in engine performance.. Harrison R&D seems good, there's auterra etc.. Look into it.

 

There are a very few that have done stand alone. Turbo97SE put AEM in his car a few years back and h2kFrosty is having a stand alone put in his turbo drag Max.

Stand alones are by no means for the begginers. However 6th gens use the same wiring harness as the 350Z so they can use many of the better stand alones made for the Z that will be MUCH easier to set up than starting from scratch. EMU will do just about 99% of anything that even the hardcore Maxima drivers will ever need.

 

So 1 person has done it... and completed it.. and another is having it done... Ok I stand corrected.. I missed 1 person....


My point still stands

 

I haven't talked to them yet but will look into this option.



You misinterpreted me; I was merely pointing out that you can't really tune without a controller. I am very aware of the difference between a stand alone like AEM and a piggyback like apexi and greddy. Sorry for the confusion.

I looked at the greddy pdf's a while back and didn't really see what I was looking for in datalogging. Maybe I was just confused by the scope of it all. If I were just looking for some tuning and performance enhancement is a NEO sufficient or would the EMU be better. I am not into spending a grand to have someone fine tune every detail so I can run a tenth quicker. Just a solution to maximize performance for what I have and will be doing. If the EMU can datalog as good as the zeitronix(the best I have seen I think) then it would justify the extra cost over the NEO. Otherwise I wouldn't see the point in coughing up the extra cash for it.

 

Check OBD-ii scan.net if you want data logging.

 

Can you give me a link to that.

 

> you

http://www.obdscan.net/

 

I was searching obdIIscan.net Oh well, thanks for the sarcasm.

 

It's free along with some of the answers.