Sigh,

 

Well maybe u guys can photoshop some ideas for me to do??

 

When NmexMAX sighs, all hope is lost...

 

nice start deus, you are on the right track. Much better than an exposed power plant.

 

Here is a short video taken in the car. I have to feather the throttle or tires spin like mad. ENJOY:
http://s4.photobucket.com/albums/y12...t=DSCN0239.flv

It may take a while to download.

 

Deus, that sounds GREAT, LOL, I personally would have un-feathered the throttle!!!

 

Deus, it's been a while but here's a few links to some discussion on using S-AFCII and wiring diagrams:

http://www.nissanclub.com/forums/eng...ighlight=S-AFC

http://www.nissanclub.com/forums/eng...ighlight=S-AFC

The bottom line is, at least for the Alti ECU's, we use the N8-C diagram and it is accurate for installing the S-AFCII. Not positive if your Max's use the same pinouts or not.

Here's a thread about how much power people are seeing from S-AFCII:

http://www.nissanclub.com/forums/eng...ighlight=S-AFC

There've been discussions as to which ECU modifier is the best, like S-AFCII, V-AFC, Greddy eManage, UTEC, etc., it really depends on how much control you want over your engine tuning. The eManage unit is excellent as it allows you full control over rev limits, speed limiters, a/f ratios, etc., but it's 500 alone without install and dyno tuning. Like I said, depends on what you're interested in doing.

 

CJ, Thnaks so much for the info. To me, another $100 or 200 is worth having complete control over the car. I know it can get expensive, but I thikn its worth it. I'd like to know if there is a way to set up a switch for racing mode and street mode regarding the computer?

 

Sounds real nice. Good work with the engine cover. It gives the engine quite the look.

 

Nice roar indeed.

 

that be nice if it fit a 3.0 =)

 

Wow sure looks 100x better with the cover back on

 

Deus, I know for a fact that the S-AFCII allows for two a/f maps, and the Greddy eManage Ultimate does as well, both via a toggle switch on the units. The UTEC allows for up to five maps, so pretty much all of the piggy ECU controllers allow at least two maps. However, for N/A applications, I don't really see the point of having two maps, as dual maps are almost without exception used along with forced induction to alter air/fuel ratios for low/high boost for instance. If you're going to stay N/A then your basic steps are:

1) Buy piggyback ECU
2) Install piggyback ECU
3) dyno tune with wideband O2 to tune the piggyback ECU

The UTEC allows for additional maps because it allows you control over the pulse cycle of the injectors as well, which means you can mess around more with fuel and air density to increase power and hence, have a need to store more maps.

The only time I could see messing with dual maps for N/A, outside of the UTEC, is if you were going to tune one n/a map for race fuel and one for normal high octane pump gas, but IMHO you probably won't see enough of a difference N/A to make this worthwhile especially with the S-AFCII/NEO product, which doesn't allow control over timing advance. Race gas is, once again, almost without exception used for boost applications when it comes to streetable vehicles. I believe the Greddy eManage Ultimate now allows control over timing retard/advance so you might be able to come up with two useable a/f/t maps n/a using race versus pump gas, but you'd need to spend quite a bit on dyno tuning to prove this out.

Here's a link to Greddy's site for the eManage Ultimate:

http://www.greddy.com/products/displ...SubCategory=47

ApexI produced teh S-AFCII, which has been replaced by the AFC-NEO here:

http://www.apexi-usa.com/product_ele...=260&pageNum=1

Here's a blurb on the UTEC:

http://www.turboxs.com/more_info.php?ID=217

 

CJ, Thanks for great information. Whats the best(cheapest) place to get these products, whichever one I decide on? What is the the need to reflash the ECU if these products are available? I was thinking about having two maps, one for pump gas and one for 100 octane gas. I think it does make a difference if timing is altered. But its true, N/A wont see as much difference as blown motors. DO any of these alter timing? Thanks again for useful info.

 

Deus, eBay is your friend when it comes to these products. If your not comfortable with eBay, look around at some of your preferred vendors that advertise here on maxima.org, I'm assuming they'll sell these products and give you decent prices since they are preferred vendors.

Regarding the timing control, I actually commented on that in my previous post but you had to read into it a bit. The UTEC and the eManage Ultimate both allow timing retard/advance control in addition to air/fuel mapping (the UTEC adds in injector pulse control as well - pretty advanced stuff really). Now that I've said that, I'll go on record here as saying that even just messaging with air/fuel mapping is serious business that can produce a badly tuned engine that doesn't run well, but messing with timing can kill your engine outright by introducing detonation by your own hand. I do believe that both the UTEC and eManage Ultimate, because they offer timing control, also offer some kind of knock protection, but in any case, all of these controls should only be manipulated by a professional on a dyno using wideband O2 tuning.

We have folks on nissanclub.com that run S-AFCII's and eManage Ultimate piggyback ECU's. I'm not sure I actually know someone that runs UTEC, but I'm sure we could find someone without too much trouble. Heck, I know one guy over on our forum that has a Maxima (not sure what year) and runs an eManage I believe.

UTEC is cool stuff, it's plug and play unlike the S-AFCII which requires manual wire splicing. A while back I looked into a wire harness provider to try and bypass the need to splice ECU wires and I found one for a 350/G35 but never did the homework to figure out if I could adapt it to my Alty. If I were to buy something today I'd almost assuredly go with the eManage or the UTEC myself.

From a Technosquare perspective, I'd go with the L-Spec burn to up the rev limiter and remove the speed limiter, that's it. I'd heard rumors that both the eManage and UTEC would eventually be able to perform these same functions, but in all honesty it's been a number of months since I've seriously dealved into this topic so I'm not sure if this functionality is available yet or if it ever will be. Both the eManage Ultimate and the UTEC are firmware/software upgradable units that allow free downloads, so as they make improvements to the newer units, you can simply download the updates and connect up your laptop to your eManage/UTEC and update the code. I'd have to ask around to see if the most recent revs of the eManage and/or UTEC's allow RPM/limiter control. I'll see what I can find out.

 

For some of the more ambitions crew, a wideband can be purchased, and installed so that AFR can be monitored all the time. If this route is taken, the sensor should be placed prior to any of the catalytic converters. This may be hard for some of you, since you do not have after market headers. Also, keep in mind, all 05+ Maxima are equipped w/ stock wb o2 sensors so in this case, any type of OBDII scan software can be used to monitor said AFR conditions. Another note to that, all 04+ Maximas share the same ECU pinout as the the Z33.



That would be Jime, a well respected and active member in the community here as well.



More A34 people need to realize this, and jump on it.

We have a write-up for the EMU. http://forums.maxima.org/showpost.ph...5&postcount=17

There would be some modifications, but if you A34 owners used the patch harness, you would be in luck. A little homework never hurt anyone. http://www.forgedinternals.com/store...cat=256&page=1



Not sure about the UTEC, but talk on my350z suggests that yes, you can alter rev limit with it. Also, the eManage you CAN, and it has been proven on this site many times.


As for the TS flash, it does some nice massaging to our CVTC curves. They are modeled after the Z33 curves, and this is a benefit to us.


Stock FWD VQ35 curve (never been confirmed on the A34)

http://forums.maxima.org/showpost.ph...1&postcount=50

vs stock Z33

http://img.photobucket.com/albums/v2..._intakecam.jpg

vs mine (TS f-spec)

http://i4.photobucket.com/albums/y124/nmexmax/VTC1.jpg

 

Excellent, us Alty guys have the same W02 systems on 05+ VQ35's. Sucks from a headers perspective when it comes to CEL's. Good to know our pinouts for the ECU's match the 350's!

Yep, that's him, just couldn't pull it out of my memory.

Agreed. I'm waiting on Cattman complete exhaust (header on back) and then I'm game.

Deus, here you go, right from your own community no less. I figured eManage could adjust RPM/speed limiter but hadn't read up recently. Awesome to get confirmation on this point!

NMexMAX,

Very interesting. I've seen some folks using EMU talk about the fact that EMU supports NVCS (Nissan) tuning. NVCS for anyone who doesn't know stands for Nissan Valve-Timing Control System. Is this one and the same in regard to CVTC or are we talking two different animals here? Haven't done the research myself yet on this point, but perhaps you may have already?

 

Great stuff guys. Very impressive and useable information to really tune out bolt on mods. I wish there was a more comprehensive way to store this info. I am not sure any of this is in the stickys. I know this is highly technical stuff, but its the wave of the present and future. No longer do we change jets and emulsion tubes in carbeurators. We hook the laptop up and tune the car. Keep the info coming.

 

Most of it is in the All Motor Stickies:

http://forums.maxima.org/showthread.php?t=492413

 

I looked on ebay for the UTEC and found specific applications, but not one for the Maxima. Will the 350Z app work?

 

Can anyone confirm this?

Kamski

 

Deus,

don't you have a G35 or Z ecu? didn't TS swap yours or so.

either way it will fit, I'm also looking into getting this one in the future.

those ecu's and parts are all promoted as 350z cause they are made for the Z, but they don't realize that it fits our car also. since there is no/ alot of people in the 6thgen maxima community wanting parts like this why even bother putting down maxima.

 

You share the same ECU as a Z33, so yes. This is a , you know that right?

I can stop turning blue.

 

From my limited info on this:

My 03 G sedan (early version) is supposed to have a diff ecu pinout than the newer ones. It's supposed to be more like a VQ35 maxima ecu vs G35. So that means for some Gs and earlier VQ35s, they might not have a plug/play UTEC/Emanage patch harness (autosport) available.

 

I know of a Maxima with a UTEC

 

Very EARLY G35S has the same MAF as the A33B. With that said, I'm guessing, from the information provided and a 3 letter acronym I have on my computer, that yours is one of them.

In that case, you could use a patch harness from a Z33, and use A33B hardware (connectors) and use a pinout to cross reference them since the Z33/A33B aren't THAT different.

Just a very raw theory at this point.

Good for them.

 

You mean use the wires from teh Z33 and the phyiscal bare connectors from A33B maxima? wow. I'd frack something up, I know it.

 

I have a 350Z map, but the actual ECU is the one that came with the car that has just been reflashed. Id hate to spend $500 to find out that it wont fit the car.

 

holy macarel!!

 

It(z33 ecu) will fit, been done before on an A34.

Patch harness(Z33 connector) + A33B connector + 2 FSM's + wires + solder + solder iron+ any piggyback (Utec/EU/EB/SAFC/VAFC/Neo) + Frustration + time = Profit?

 

So, yes or no, will the 350Z/G35 UTEC fit the 6th Gen Maxima? Im still not certain I saw the answer.

 

Yes the ECU will fit, with that said in, theory ( I've never done it) but yes, it will fit more easily than it will on an A33B. Do some legwork and see what you find.

 

it seems you are the leg work NmexMAX lol..

 

It's not my fault I try to help you fellas.

Look at this and ....Thank me later...http://forums.maxima.org/showpost.ph...20&postcount=2

 

Stop lording your superiority over us!

 

My gas mileage is clearly much better. Im wondering if its cuz its running lean. Im interested in a larger diameter MAF, TB and intake tube.

 

I really don't see what the big focus on intake, maf and throttle body is. I run a 3" intake, maf and 62mm throttle on my Buick's 3800. It's not hurting for air intake at all in fact plenty of guys have run them into the 10s. You could correct a lean fuel issue with a piggyback.

 

Maybe because your Buick is FI? I'm making a 3" MAF housing to bolt on to the stock airbox, and put it to test. It'll be a little while for the result though.

 

How do you make a housing?

 

Deus,

why worry about running lean or so, just go get a dyno done and find out how your car is running.

I see you are looking at spending 500 on a utec without knowing for sure if you really need it.

I dunno why it isn't killing you to find out what you got for your money and find out how efficient the car is running before you mod on.