Hey guys i was thinking about upgrading my ecu, but im not sure if i should go with the JWT, or the new Emanage Ultimate, can i have some opinions on it?

 

I wouldn't get either right now. Reason being that no one has successfully advanced ignition timing and gotten the rev-limit thing to work with the E-manage Ultimate on a VQ30 ECU since it's so new. I would wait to see if it's possible first. If so, the EU is the better option by far. If not, then the JWT is the way to go, with perhaps a S-AFC to fine-tune some more.

 

jwt ecu is in my opinion the best route bc it's plugs in 5 minutes and your ready for the world. e manage isn't that easy after u spend the 700 for it and you get the 400 recommened wide band o2 sensor to help tune it and still wide up spending another 350 after finding out you have no clue how to use it and have somebody else to tune it for u. U had wished you just bought a jwt ecu

 

eerr....ehhh. careful with that a/f ratio @ 6k+

 

JWT is a POS, they dont know how to make the ECU's properly which why the boosted guys are mad.

EU will be nice once the revlimit works.

 

ya.. mine was 14.3 at its highest.. scary enough for N/A let alone boosted

 

Speak for yourself. A) I've already got a wideband and B) no one but me will be tuning the emanage. I'm willing to take the chance with it at this point that I'll be able to replace the JWT and be able to have full control over everything myself. At worst it'll still allow me to tune fuel without adjusting timing, something I need done anyway since my JWT is way lean for my mods. And furthermore, the timing already works on a VQ35, so later on when I swap to a VQ35 it'll still be useful, and by then there should be several more software/firmware updates improving the functionality.

 

I cant speak of the diffrences in performance or features but i can say that JWT has had my ECU since may 24th 2005 and ben has a BS excuse weekly

 

You should tell him you want some money off the job then.

 

never thought about that but apparently it is being shipped today....which is what i have been hearing since friday

 

Even once you get the JWT you are still going to need something to tune, it doesn't come with the perfect AFR for every maxima, there all different.

 

In fact, it is quite uncomfortably lean

 

JWT is useless to me since I have a VQ35 and need to advance the sh*t out of the timing to run it at its full potential. I will need an UE anyway.

 

but what about us non-3.5 guys is the EU better than JWT?

 

JWT can "advance the sh*t out of the timing" if you ask.

 

Just like TS did for ... damn forget his name .. but he has the timing curves, and his were much more advanced than any TS or JWT ... that was ever tested .. and all upon his request. On a 3.0L ECU no less ... Food for thought for JClaw ...

 

Has anyone had the ECU specificly modified to their mods. IE. I am going to add headers, but would prefer to not have to tune just so I don't blow up my engine. Is the stock ECU rich enough that by the time you have an intake and headers you are lean, but safe?

 

That would be me.

Here is the link.
http://forums.maxima.org/showpost.ph...postcount=131]

 

Even though I have plans to swap to a VQ35 next year, in the interim I will be installing the EU on my VQ30 (it's in the mail, should get here next week). Also, I currently have a JWT ECU so if you can wait I will definitely be posting info on my experience/results before long.

 

ducky, i should be buying the eu on friday.

if you want help tuning it, i can help you.

 

Alright! Someone else taking the plunge.

Is it just the 2 of us so far unless JClaw makes 3... with Ice jumping in sometime too?

Where are you getting yours from?

 

I think I may get mine from brandon, per my conversations with him over email.

you got yours from sharif, correct?

I think alex is working on the pinout for the harness. shouldn't be too hard, but i have to get my car running right first.

since i installed my 410's this past weekend, something is up.

 

Yes, but you're still stuck with that static, unchangeable tuning. The best way to tune a car is to get on a dyno, and see what this specific car, with these specific mods, needs. That can be the difference between getting the 90% out of a setup, and getting the 100% of that setup.

Plus, when I add more mods (like some sort of respectable intake manifold), I will need to play with A/F some more, and if I ever decide to Supercharge the 3.5L, I'll have the tools already.

 

I am waiting for some more money, but I will buy before the end of August, because I want to see 12s this year. September and October up here are awesome months for drag racing. The weather is usually perfect.

I'll be getting mine from Shariff. 638$ shipped for EU and harness, even here in QC.

 

Yes I got mine from Sharif, but I've been following Brandon's progress with his IS300 over at his forum too. Sounds like his rev limit problems were just a setup boo-boo, which is good news.

I don't think the wiring will be that difficult either. If I happen to get to it before Alex does I'll try to post up a pinout as well.

Good luck figuring out your problem...

 

how are you thinking of setting up? i get a bit confused about some of the sensor inputs.

 

Well, I want to run both water and air temp inputs, which negates using the knock sensor inputs on those lines so I'm not sure what I'm going to do with that one yet, as I'd like to have it connected. I wish they hadn't lumped those 3 together on only 2 inputs. I'm considering using the analog input for the KS but not sure about that yet... Option 1 and Option 2 I would use for WBO2 and pressure sensor if I were boosted like you; since I'm N/A I'll just use #1 for the WB.

Obviously things like MAF, TPS, coils and injectors are straightforward but for crank/cam I think initially I'm going to go the route Brandon did - ie just hook up the crank signal and leave the cam and tach rpm inputs unconnected. If that doesn't seem to work then I'll start switching it up.

As far as outputs go I'm going to use the NVCS to activate my VI, and probably the water temp relay to activate the fans in combination with a lower temp T-stat. I may also use the aux output for something.. maybe a shift light.. not sure.

That's my rough plan at this point, but I'll likely give it some more thought in the days ahead before I get to the actual install.

How about you? What were you thinking of doing?

 

i was looking at the iat and the water temp for my ambient as well. I was also going to do the same with the crank sensor.

as for some of the other things, I am still learning.

I figured out the tables, but since I didn't use the blue, familiarity with the software is not my forte.

I would like to talk more about our two setups (and possibly jclaw's) so we can get a good base tune. Since the blower does not go into boost until around 3500rpms, we can have virtually the same tune. (oh wait a second, i now have a z32 maf and larger injectors, nevermind)

 

Ya unfortunately your setup is going to be different from both mine and JClaw's. BUt it does raise a question I'm wondering about too, namely how is the injector scaling done? I don't have 410's like you but I'm not stock either (DE-K injectors). Because if the EU does the base scaling via airflow then that would affect timing also wouldn't it?

I wonder if it'd be better to set it to stock injectors and then just adjust the maps, rather than trying to scale the base injector size. This might be more of an issue for you though, as the gap between stock and 410's is larger than for me with 290's.

 

I think 270's (what I have) are good for about 270whp. I highly doubt I'll be maxing that. In fact I don't think anyone has made it to 270whp N/A yet. The closest is SR20DEN but he has his super duper intake manifold

 

well if i choose my hotwire and injector settings as vg30dett, then it will be close because the 300zx has 370's stock and i have 410's

 

Right that makes sense, so you should be alright there. Which crank were you thinking of trying first?

 

vq30det crank (since it is the same engine)

But if iirc, the crank is thicker than ours, that should make a big difference in the crank angle, should it?

 

actually, the vq30det has the same maf and injectors as the vg.

The crank angle sensor for all VQ engines are NS_4. The VG is NS_1.

 

Mr duck i will let you know if its worth it in about an hour...
http://forums.maxima.org/showthread....=1#post4231621

 

So you could likely just use everything VQ30DET then. I think for my setup I might just leave everything VQ35 and see how it does..

 

I hope your JWT works out well for you Zack. Do you have any means to datalog your A/F with it? (ie wideband)

However if the EU capabilities can be fully used on our cars it will truly eliminate the need for a JWT or TS ECU.

 

ok steve, and dandy i guess i will be waiting for you 2 to be the testers, and if all works out, than looks like i will be going with the emanage. Main thing is the rev limiter that i want to work out, but we shall see. thanks everyone for your inputs.

 

Here's the bottom line. If you just want to get your car tuned once and that's all you care about then get the JWT ecu. But many people want to tune their car on the fly. Everyday is different so it will need to be tuned differently everyday to get top power. Every mod is different so it too will need to be tuned to that. etc. etc. etc.

 

Would like to know if you guys got the E-manage Ultimate working ????If so I have a few questions . I just finished up installing one on a 99 w/vortech supercharger and 370cc injectors . Runs real rough ?? like it not firing on all cylinders ??

I have done many intalls on 350z and g35 with no issue . This one has me

If so can someone e-mail me as I cant seem to search or e-mail on the forum yet ????? Which I think is foolish as Noobie can search instead of posting repeat questions . I am a member of 9 car clubs and many forums and have alway had the search open from mday one upon registration

ballistic@vehinet.com

thanks in advance, Scott