Suposedly, UR has it figured out, but inorder to get the solution, you'll need to A)Buy the eManage from them
OR
B)Buy a $50 RPM harness




Somebody that has the eManage look into this more please.

http://www.my350z.com/forum/showthre...0&pagenumber=1

http://www.ultimate-racing.com/Produ...Index-US.shtml

 

interesting...but I assume this is a solution for the VQ35 coils specifically, because the in-line diode "trick" seemed to work fine after we installed it on Coreys 99SEL(thanks to Dixit trying it out first!)...no burnt coils, but didn't get to test any higher than -/+1 degree though and couldn't get it on the dyno in time to see the TQ curve and look for any changes. but this summer should be fun for us, once we get everything back on track over here.

from the my350z thread....this is exactly what we did...
As far as instruction I can tell you the crimps that come from Greddy to install the wiring are difficult to work with and should be soldered also and finished with shrink tubed. I would not risk my ECU or coils to a crimp that did not close properly or a short.

which is why we chose not to use the Greddy suggested install method using the flimsy crimp connectors. all our connections were twisted, soldered and WRAPPED...both on the ECU and the diodes!

what confuses me is that the problem seems very sporadic among drivers...altough it happens, there are also many VQ3.0/3.5ers out there who haven't bunred any(any not using any diodes)...but its funny that Greddy themselves is still having problems and STILL has not released their mythical upgraded ignition harness(with in-line diodes )

 

FWIW 3.0L coil packs and 3.5L packs are just about the same. I am running three 3.5L coil packs on my front 3 cylinders with no problem.

 

Well something is definetely different. Because after I put the inline diodes, the system doesnt fry my coilpacks except when I start boosting or go WOT, the car starts bucking. The whole ingnition map is clear, no changes have been made to it yet. I disconnect the emanage and put the wires back to stock (thanks to putting quick connects on each end) and drive the car, no problems. So something is still wrong with my setup.

Not to mention with the setup Im still getting the P1320 ignition code signal in PENDING on my Harrison OBDII which means there is a "possible" issue with the system.

I got a scope at home, just waiting for my friend to give me the two probes and I need to check what the issue is. Something clearly is still wrong.

But getting back on topic, I dont understand this RPM harness at all. What does this have to do with the timing harness on the eManage? I know the eManage is getting the correct RPM because my Wideband O2 logger reads it correct. Im still lost after reading that entire thread.

Dixit

 

I read on the 350z forum that the burnt coil was a myth. The greddy 350z burnt one coil and they said it was from a faulty install. But alot of 350z are going with the UR solution.

 

well IMO its not a myth...its more of a sporadic problem that happens every now and then from what I've seen. I've seen two others personally and plenty of Evos with burnt coils and pro install. but this "UR solution" is not clear...everyone is saying it works, but WHAT is the difference between the harnesses?(no one is saying ) I don't see any diodes or anything...whats the deal?

 

Exactly my questions Addae. No one seems to want to explain wtf the deal with that is? Basically from what I can gather, it sounds like the eManage cannot correctly read the RPM which causes issues with the timing. Which dont seem correct to me.

Spanishrice, I dont think its a myth. See below. Thats my coilpack after the ignition harness install.


Dixit

 

I know, I know, I am just posting what the 350z guys said.

 

I'm thinking the same thing, that the eManage somehow needs the RPM harness to correctly condition timing.

I didn't know anybody here had gotten it to work with the diodes, but until you guys verify you're actually retarding timing...I'm still skeptical about buying the eManage for this task.

 

I know for a fact when I helped Corey with his situation by sending him the diodes, Addae and Corey got it working flawlessly. They were retarding timing as well. Proven cause they dyno tuned it a few times.

Just doesnt seem to work on 5th gens.

Dixit

 

Also amazes me that no one responds to my comments/questions. They just ignore it and continue on their business about the 440cc injectors.

Dixit

 

yeah from my standpoint I'd say we pretty much got it working...heres the situation

on the street after the install: I pulled 2* all across the board in vac and then 1* in boost...off the line the car was noticibly slower(due to the 2* pulled in vac)...in boost of course it was hard to tell the difference though. next I took it back down to 0* in vac and kept 1* in boost...the slightly sluggish starts were gone(as expected!) and everything seemed normal up to 9lbs which was what the WG was set at. so from that instance I pretty much took it as a sign that timing retard was functional...we got a ign. signal code...blah, blah, but no burnt coils, we go home happy!

about a week/few days later on the dyno: now our dyno session didn't go so well as far as testing timing due to some other problems with the CM kits top-notch "construction" (which is now corrected) but anyways...the car wouldn't boost over 6lbs...so as far as getting it on the dyno and actually viewing how the timing changes affect the TQ curve, we were unable to get that far...and then a few weeks later well you know what happen to his car that day we were shooting for the big 14 and I had timing ready to be pulled from 11 and up...it would have been perfect since we were gonna do a baseline and then we could compare the TQ and most likely see the difference when timing is pulled.

but I'm 99.9%(theres always that .1% ) sure I had it working 100% as far as retarding goes...I know for sure we avoided the burnt coil prob using the diodes, and if my butt-dyno is calibrated pretty well , I could SERIOUSLY feel the change in power when I took put in and took out 2* in vac...but again until we get his car back into the game it'll be a toss up I guess

I'm currently working on Emanage for a B16 CRX, and I'd love t try it out on that, but right now its gonna be a while before that thing gets rolling again.

 

Yeap same here. When I got it working I pulled 3degrees starting from 1500. I noticed car was not the same, I can go up this same hill I tested on in 4th gear and in boost continue to gain speed. The hill is about a 30* slope.

After the retarding, I couldnt even build boost let alone get up the hill. I was loosing speed going up it. Took the timing off. Did the run again, and bam, no problem.

I advanced the timing at idle and also heard the engine change its tune, so I know that effect took place as well.

Just kept getting the P1320 in my pending section of codes and then with no timing on the map, the car was bucking in boost or WOT. So since then its been disconnected.

Dixit

 

Dixit,

Here are some more instructions:
http://www.etherealdesign.com/pics/3...ioninstall.pdf


Compare these to your setup and see if *ANYTHING* is different.

 

yup, thats how Dixit told us to do it...so I doubt he'd have it wrong question, are the 99.5 and 00-01 pinouts the same??

its interesting how you can't advance though...but who gives about advancing!

 

Doubt it...don't know though.

Advancing would help lag or NA operation.

 

You know, one thing is clearly different. Is the RPM slice. I dont fully understand the "(Y)" next to the RPM.

Seems like they are splicing an RPM wire to each coil signal input.

Also the are using an 1N5400 recifier diode where I used a 1N4007 which is the same. I used the exact same ones the J&S uses.

So the RPM tap is what is interesting to me. But since the setup cannot advance timing, this whole timing thing is almost useless to me now. Id rather just use the J&S. I mean the eManage is ok, but we all know the J&S is the king in that area. eManage cannot sense knock and retard timing on next revolution. It will retard it based on the map period. So looks like im walking away from the project and just going to sell the Ignition harness to whoever wants it for a maxima that doesnt have a J&S.

Dixit

 

Actually I think I realize what that $50 harness is. I dont think it has ANYTHING to do with the eManage. They are using it for other things. They are tapping to each coil signal wire to get the RPM which is then combined all into one. This is what gives the RPM to a unit like an SAFC. But what I dont get is why not just tap the tachometer wire? Maybe the Z33 doesnt have one? I dont have their FSM to see, but that would be interesting to see that they dropped the tach signal wire completely.

Dixit

 

I'm past confused right now...all these damn harnesses

 

Thats why I decided to just give up and put the J&S back in there and let it do its thing. Its better anyways.

Dixit

 

We all know J&S *IS* superior, if you have that, might as well get a PSC1 from Split Second instead of the eManage or SS FTC1.

However, SS FTC1 for the VQ35s can do some cool tricks besides control fuel/timing like turn on an aux fuel pump or optionally control upto 4 additional injectors PLUS a whole bunch of other crap I haven't figured out yet.

I think I'm going to order one soon along with install some RC440s and a NOS #5124 kit.