Found Possible Fix To VVEL
 

I've been doing some search lately to solve our VVEL issue, I found this company online that offers complete CAN BUS software’s and Interfaces.
They also offer Engineering services maybe we can start a Group Buy and contract them to offer us new software for our cars I’m not good at negotiating so I will leave it to someone with a better idea of what we need to do the negotiations. Here is a link to their web page they look super LEGIT.

Vector: Software + Services for Automotive Engineering :happydance:

Sounds interesting.

Lots of wishful thinking needed for a company like that to do a ECU development group buy with a forum. ;)

A good thought, though.

Yeah UpRev is undoubtedly miles ahead of the game already. If anyone's going to sort it out, it's them.

Doesnt look like they're in the tuning market to start off with...but the nre costs associated with development and testing would be huge. You'd probably need a huge lineup to even get them to think about it...

can someone remind me why vvel is a problem that needs to be fixed?

Maybe we don't need them to create new software they already have it we just need them to point us to our VVEL maps. The software they have is Perfect for anyone if Z1 or GTM gets a hold of it they will know what to do.
I spoke with SAM a while back and he told me the reason he stoped trying is because he did not have the means to create the software from scratch, but if UPREV would give him the rigth tools he would be able to tune VVEL. So if we can all Chip in get Z1 or GTM this software they can use it.

.... i'll ask again

You are assuming that VVEL is a problem then?
When what Uprev has reported so far VVEL is pushing itself almost to the limit from factory already, if you want to encourage something ask a few companies to make exhaust cams for our car and see what that does to our tuning.

I would do a group buy if I can get more than +1 hp/$50 with a minimum of 20 additional horses without increasing the rev limiter.

Relax,
I meant the VVEL tunning issue, I never meant that VVEL is the issue.
and if i knew i was going to get such negative feed back I would have never post it up. I only did because every time i read a VVEL thread 90% of the posts are people wishing there was a tuning solution.

The reason is because people believe that with being able to adjust VVEL you will gain a good percent of power when in reality it might be a few HP which can scale with force induction.

More to the point--software is an easy fix. Actually making adjustments requires a ton of time to experiment(and risking the engine)

I'm not an ECU developer, but I am a software developer and I've dug around a lot of the public info about how this stuff works, what UpRev is looking at, and what's possible with Nissan proprietary interfaces, etc. From that company's descriptions on their website, if they could do anything for us, it might be to develop software for us that speaks all the right protocols that's (a) More capable that Cipher, closer to the dealerships' Consult interface, and (b) Cheaper and more available than actually buying Consult. But this would still be basic data logging and ECU controls, it wouldn't be replacement ECU software itself. Not that they probably don't have people of that sort of talent on board, but it's probably not what they specialize in doing (reverse engineering and replacing portions of the ECU software).

What UpRev is doing is exactly that: they're disassembling the ECU's software and reverse engineering it to find out how it works on the inside, and then releasing aftermarket customized versions of this software that allow realtime (and fixed) re-tuning of tables and parameters. It takes a *lot* of reverse engineering and development time to do this and produce a reliable ROM that doesn't screw the car up, and UpRev has been on the task for a while through generations of Nissan cars, and especially for quite a while on our cars.

It just doesn't add up that this other generic company that happens to work on CAN-bus protocol stuff and whatnot is going to catch up and do better than them at this, when it's not even their target market.

i don't think uprev even wants to try to care. I want to know if you jack up the vvel curve can you actually hit the pistons? does sam have an extra block and set of heads lying around somewhere where he could throw some clay on the pistons, slap the head on, time it, use a crescent wrench to turn the vvel fulcrum shaft all the way open and turn the bitch over to see if it actually can touch and determine the clearance? then advance and retard the timing all the way (maybe just do it with the chain?) and turn it over again to see if it hits. why don't we start here. because if nissan built enough clearance into the system well then uprev has just been lying out their @sses the whole time.

Vendor bash much? The extra clearance and adjustment room, as I already mentioned, is most likely for manufacturing tolerances, and if anything probably a safety margin so you don't hit anything if things get a little out of adjustment over time. Meaning it won't be universally available, usable, or safe. UpRev's been working hard on tuning our ECU for a long time, so it's kinda hard to claim they don't care either. If you'd like to purchase your own crate engine from Nissan for 8K to screw around and damage something and maybe figure out a trick to gain +3rwhp sometimes for some engines when the stars align, feel free :rolleyes:

:iagree:

Go look at there Facebook page, there are pictures of them working on our block messing with VVEL recently and some in the past. They do care, but the Z is not the only car they work on.

They are also a relatively small operation from what I understand.

Uprev: Yeah thats the VQ37VHR. Just wait till you see what we're doing to it next. Some people are going to cry.
Wednesday at 5:38pm · Like


seems as if they are moving forward on the vvel testing, looks legit! :P

I'll be shocked if they do but hey it has been 2 years since I they said they "had it cracked but didn't want to it do to lack of support, unless I sent them my car an unknown amount of time" and I think it was $40g it only takes two phone calls to lose faith.

Haha I actually have an extra set of heads for just that. And I'm not talking about the adjusting screws I'm talking a good ole valve clearance test it takes 2 hours and doesn' involve starting a car. If sam has a short block set of heads and a timing set we could lnow exactly what the vvel can and can't be adjusted to

Considering some other cars take 4+ years just for basic tuning, also the engine they are working on is a customers car and it took them a year just to get someone to volunteer to let them use the motor. I would give them a little slack.

i will say if they do it it will be a nice way to go about it because it is fairly painless to use the factory ecu. I just don't trust anyone that feeds me lines instead of just saying we aren't working on it at this time. not this give us ur car and 40grand ****, they actually feed me the i'd "have to get 200 people in on a group buy for it cuz thats what they get from stillen" thats bs just say ur not gonna do it.

why wont anyone just let it go? sure it will be nice/great/cool if someone gets in there and allows us to play with making adjustments on the VVEL.

But as it currently stands, it works really amazing and does its job very well already and is an advantage other engines dont have. the gains are probably extremely marginal and aside from that you would probably just completely screw everything up.

people are so friggin worked up about the VVEL cracking and 99% of these people wouldnt know the first thing to do with it if it was handed to them. i find it boggling that people are getting so hot and bothered that they cannot adjust their VVEL, just leave it alone... if someone does it you will know.

While I agree that this subject has been beaten to death... none of us know what sort of power gains we might see with adjusting the VVEL... so to say the gains may not be much is all just speculation.

:iagree:
/thread

yeah, we should definitely spend our time worrying about things that actually matter. Rather than PM'ing guys about the VVEL status, we should check in on the status of the fuel stave fix.























:icon18::icon18::icon18::icon18::icon17::icon17::i con17:

wasn't there supposed to be a swirl can for that or something? also uprev isn't a vendor so i can thoroughly voice my dislike of their public relations all i want. great product, customer service not to bad, but can be **** sometimes.

:owned:

Lol, hey it's production status now!

To assume that there's any more that Nissan left on the table for an NA application is just as much speculation :)

sweet. excited to see how it works for people::tup:

my point is, all we want is the damn software tool not an analysis of at what lift and what degree advance it will crash a valve into a piston or how much power it will or won't make. put the adjustability in the gui and let the highly qualified shops that can tune and build one of these motors do the rest, thats what we do right now anaway, you could buy a tuner license and blow your damn motor up in 5 minutes without the vvel control anyway so what would change? you need to know what your doing to use this software as it is.

There is more to it than just giving the software to users.
You have to be able to provide support for the users, the software has to be stable, adjustments made must stay (another part of the ECU does not override) causing other problems.

i understand that but why not start with opening up the main vvel and cam advance maps to their pro tuners, and let them work with it, then as shortcomings in the software are found they could correct it one problem at a time? Thats the way they did it with the ignition advance.

I'm sure they have plenty of good reasons since they currently have no interest in taking your money for it.. They don't owe anyone any explanation.