You have 5 maps normally. One of those will be your STOCK MAP. I had issues with my UPREV and I can switch to my stock map and my car was fine then. If you can switch maps, put it on your stock one and normally the problem goes away.

Also UPREV has access to the Stock flashes. Contact them and they will email it to you if you don't have one for a 370z. or Sharif needs to as he is a vendor for their software.

I have made many dumps of my stock ROMs as I had the full tuner version of the software. It only takes less than 2-3 minutes to pull it off the ECU. Not an hour. Sounds to me like Sharif is making excuses. Call UPREV.

As I previously tried to explain, the problem isn't the map, it's the ROM. Switching to the stock map within the UpRev ROM won't do any good, as the bug will be present in any map that is hosted within the ROM (according to Sharif).

Yep, good idea. If the fix isn't forthcoming soon, this is what I'll have to do -- replace the ROM entirely with the factory ROM. Sharif said he's going to call UpRev on Monday to get a better idea of what's going on, ETA for fix, etc.

I don't know if Sharif is making excuses. Heck, for all I know, I may have misunderstood him. It's really immaterial at this point -- the bottom line is that he didn't make a backup of my ROM, so worse come to worse, I'll have to get UpRev to send Sharif a copy of my factory ROM and have it flashed in. (I don't have my own license to the software, so I'm dependent on Sharif to flash it in. I didn't figure I'd have any need for my own copy.)

Having said all that, I don't think the problem is bad enough to make flashing my factory ROM back in absolutely necessary. Basically, the throttle is a little quirky on cold start, and the problem goes away within 2 mins. It's not like the car is completely undriveable or anything like that.

When I switch to the stock map I still seem to have the problem.

I looked up the maps and i don't seem to have a stock map
Uprev said last week that should have a fix real soon.
If I were to guess I would say it would be within the next couple of weeks

weeks??? LOL this kind of thing they better fix in the next couple of hours...

I'm sure they'll take care of it ASAP. I am just worried I'll have to make another long trip to UpRev in Austin and if that's the case then..well i dunno what I'll do because that probably won't happen for a couple months at least but we'll see. I can't imagine this problem taking too long to fix because it would seem since they got most of this figured out already these little quirks would just be simple rounding out some rough edges. I also tried the stock map but couldn't tell it to be any different. :confused: I also seriously doubt Sharif is screwing semtex, I would trust Sharif and I trust UpRev to fix the issue and make things right.:tup:

Sharif is a standup guy, 100%. He cared enough about what was going on with my car to call me Saturday night at 10pm to discuss it. That says it all. It is not my intention to cast aspersions on anyone's integrity here, be it Sharif's or UpRev's. I have 100% confidence in both parties. I have reported this issue only because it is my personal policy to be open and candid about whatever results I get, good or bad, for the betterment of the community (i.e., I believe in open knowledge-sharing amongst fellow enthusiasts).

I don't know where you guys are getting the idea that anyone is saying otherwise. I don't doubt the integrity of either of these institutions. That is why I expect them to take care of it very quickly. People have to understand that these things happen and that they often are easy quick fixes.

I was thinking about this and wondering if you guys don't think it might not be UpRev's problem, but rather the effect of a Nissan safety feature responding to what it perceives as a problem. What I mean is that maybe Nissan has built in coldstart safety features. I know I've felt that hesitation where you push down and it does nothing and then lurches forward. I know the feeling you guys are talking about because I've definitely felt it (to a lesser extent) on my stock tune. So maybe its the ECU responding more aggressively to protect the engine during cold startups. I know there are lots of "maybes" here, but I'm just throwing out a somewhat logical explanation that may give someone an idea as to what's going on.

Just being logical eliminates tuners from the equation. The only two things everyone has in common are the uprev ROMs and the Nissan ECU. I doubt, after all these years of programming for Nissan and uprev's usage of other stock ECU functions, that they would have mistakenly cause a silly issue like this. Kinda leads me to think that the culprit is the new player in the mix...

Makes sense, definitely possible.

I think B1nks was responding to NIZMOZ's assertion that "Sounds to me like Sharif is making excuses" when he stated that he doesn't think Sharif is screwing me. So I just wanted to be unequivocal in my agreement with him is all.

As for your theory about this being a coldstart safety feature, sure it's possible. But whatever it is, that doesn't mean we can't desire for UpRev to find a way around the 'feature', if they can. Unlike you, I never experienced this behavior in my car prior to the tune. So if it's a safety feature responding to a perceived problem, it's a perception that didn't exist in my particular car prior to the tune. Does that mean there really is a problem that now exists as a result of the Uprev flash? Or that there is no problem but the Nissan ECU is now confused? Who knows. But time will tell, after Uprev does their investigation. On the off chance that they say this the way it is, we have to live with it, I'm prepared to do just that. But at least people will know what to expect with Uprev tunes for this car moving forward.

Yeah, that's what I was referring to. I too did not experience this problem prior to the flash on my stock settings. I'm hoping UpRev chimes in sometime today with any sort of news. Semtex do you know if Sharif has contacted UpRev about this yet ? I would assume he has but if he hasn't I will just to let them know what's up.:tiphat:

You guys have never felt a gear go flat around 3k rpm on cold starts? Its slight, but its there...kinda feels like "ok buddy im cold, shift here please" It may well be a mechanical thing too from the engine just having to warm up to seal well.

I didnt say they couldn't. I want them to work around this problem just as much as you do, I'm waiting for the fix to go get the car tuned. I'm sure they will look at logs to see what the car is doing electronically around those points and pinpoint the problem then work out the bug. Its going to be a bit annoying to have to reproduce the problem on completely cold starts though haha. Chances are they are working on a fix right now...

I do not know if Sharif has contacted UpRev yet. But I believe John from Z1 has. In any case, it wouldn't hurt for you to contact them as well just to make sure they're aware. Let me know what they say.

I think you're experiencing something different. What I'm feeling isn't up at 3000rpm. It's between 1000-2500 rpm, right where you tip the throttle in as you feather in the clutch. The easiest way to describe the feeling is of a sticky throttle. You depress the gas pedal as you let in the clutch, and the revs just don't climb. It just kinda lags and you don't go anywhere. Then all of a sudden it 'unsticks' and jumps up to around 2500rpm (give or take a few hundred), resulting in a sudden lurch forward. So what happens (with me at least) is I reflexively disengage the clutch when I feel the lurch. But then I'm sitting still again. To a bystander on the outside, it probably looks like I'm brand new to driving MT. What I have to do to get moving is make a conscious effort to override my reflex and not disengage the clutch completely when it lurches. Just lighten up the clutch without complete disengagement. That way, I get actual forward motion and proceed on my way. It's anything but smooth. lol