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Nissan 370Z Forum (http://www.the370z.com/)
-   Tuning (http://www.the370z.com/tuning/)
-   -   UpRev ECU tune results for Semtex's Z (http://www.the370z.com/tuning/10654-uprev-ecu-tune-results-semtexs-z.html)

Zeto 10-30-2009 02:22 PM
Quote:
Originally Posted by semtex (Post 259326)
My thoughts are . . . ugh . . I'm speechless right now. I'm about to post some updated info in a few mins to this thread. You'll see why I'm speechless.
-Rep points for leaving us waiting :mad:

semtex 10-30-2009 02:24 PM
Quote:
Originally Posted by Zeto (Post 259360)
-Rep points for leaving us waiting :mad:
Dude, I just posted above you.

Zeto 10-30-2009 02:28 PM
Quote:
Originally Posted by semtex (Post 259361)
Dude, I just posted above you.
Sorry you got it in before me. Damn that suck though! Any ideas why it's acting wierd? Do you have any check engine lights?

jpit 10-30-2009 02:31 PM
One of the things that my Uprev tuner did was to give me five different maps controlled by the cruise control buttons: performance, economy, stock, valet, and theft. It is pretty easy to determine if there is a problem with the tune.

cotizi 10-30-2009 02:33 PM
get a hold of him or call Rich at Uprev. That doesn't seem right.

semtex 10-30-2009 02:34 PM
Quote:
Originally Posted by jpit (Post 259370)
One of the things that my Uprev tuner did was to give me five different maps controlled by the cruise control buttons: performance, economy, stock, valet, and theft. It is pretty easy to determine if there is a problem with the tune.
Yeah I didn't get alternate maps. I asked about those and Sharif said he really only does that for turbo'd cars. Zeto -- no CELs. Everything appears normal.

NIZMOZ 10-30-2009 02:42 PM
330rwhp on a dynojet sounds way off. Like it was out of calibration. No way your car would do that. But the other numbers sound right compared to Forged dyno. That is normal. I think your car is fine.

Quote:
Originally Posted by semtex (Post 259359)
Okay folks, all is not well. Two things are going on.

First, since getting the tune done, my car is doing something rather strange on cold starts. I start the car, wait my normal 30 seconds for everything to warm up, and when I slip it into 1st and tip the throttle in, there's like this weird dead spot. Gas pedal goes down a little, I start to feather the clutch in (same thing I've done a million times before), and nothing. The rpms just kinda don't go up, then all of a sudden, WHAM, the rpms jump up to where they ought to be and I go lurching forward like I've never driven stick before. But it only happens on cold starts, and goes away as soon as the car has warmed up a little more. Like by the time I get out of my neighborhood and make it to the first set of lights a half-mile from my subdivision, the problem is gone. I can launch as smoothly as always. No dead spot, no lag effect.

The first time this happened was yesterday morning when I left to go to the gym. I thought maybe it was my imagination or maybe it was human error on my part. But this morning, it did the same thing. It even did it when I was done with my workout and left the gym to come back home (car sat for about 2 hours). Something is f'd up. The driveability of my car has been compromised.

Okay, the second thing going on is this. I just got back from my DynoJet pulls. I have LOST approx. 15whp since my last DynoJet pull on the same DynoJet! Check it out. RunFiles 003 and 005 below are from today. RunFile 010 is from back in May.

http://i618.photobucket.com/albums/t...Jet_103009.jpg

I know, I know . . . different pulls on different days, months apart, right? But look at the run conditions:

http://i618.photobucket.com/albums/t...t_103009_b.jpg

The green and yellow lines are from today. The blue one is from May. It was cooler today than it was in May. Humidity is higher today than in May, but the correction factors should compensate for that.

Take these two things together -- the weird dead spot on cold start, plus the bizarre dyno results, and I think I'm being fair in saying that something ain't right!

I haven't been able to talk to Sharif yet, so I'm not sure what the next steps are. But right now, I'm about ready to have him flash my stock tune back in. This is not the desired result.

semtex 10-30-2009 02:48 PM
I'm making 318 on Forged's Dyno Dynamics and only 316 on a DynoJet and you think that sounds right? :icon14:

In any case, dyno numbers aren't my main concern right now. That dead spot needs to be addressed. I'm not sacrificing the driveability of my car for a piddly 6hp gain.

NIZMOZ 10-30-2009 02:50 PM
Quote:
Originally Posted by semtex (Post 259383)
I'm making 318 on Forged's Dyno Dynamics and only 316 on a DynoJet and you think that sounds right? :icon14:

In any case, dyno numbers aren't my main concern right now. That dead spot needs to be addressed. I'm not sacrificing the driveability of my car for a piddly 6hp gain.
I was thinking the 301 dyno that guy posted. Ugg. Sorry. Then yes that sounds right for 330rwhp.

John@Z1 10-30-2009 03:01 PM
What was the smothing on that dyno jet graph?

semtex 10-30-2009 03:24 PM
Quote:
Originally Posted by John@Z1 (Post 259394)
What was the smothing on that dyno jet graph?
3

John@Z1 10-30-2009 03:38 PM
It's pulling alot of timing. Did you get some really bad gas? At the moment we are facing the cold start issue. But we will be taking care of our guys for free. Call Sharif and tell him the issues, I'm sure he'll take care of it.

semtex 10-30-2009 03:46 PM
Quote:
Originally Posted by John@Z1 (Post 259442)
It's pulling alot of timing. Did you get some really bad gas? At the moment we are facing the cold start issue. But we will be taking care of our guys for free. Call Sharif and tell him the issues, I'm sure he'll take care of it.
Shell V-Power 93 octane. That's all I ever fill up with. So you guys are seeing the cold start issue as well? Good to know I'm not alone! Thanks John.

John@Z1 10-30-2009 04:24 PM
Quote:
Originally Posted by semtex (Post 259451)
Shell V-Power 93 octane. That's all I ever fill up with. So you guys are seeing the cold start issue as well? Good to know I'm not alone! Thanks John.

No prob man I will keep you updated.

RCZ 10-30-2009 04:42 PM
OK This is making me rethink my tune for tomorrow...

ChrisSlicks 10-30-2009 05:00 PM
Quote:
Originally Posted by RCZ (Post 259509)
OK This is making me rethink my tune for tomorrow...
I certainly wouldn't until they get to the bottom of the issue.

semtex 10-30-2009 05:24 PM
I wonder just how common the cold start problem is. Like I wonder if everyone who's had the UpRev tune so far is experiencing this. Or if it's just a few of us.

myfirstz 10-30-2009 11:18 PM
Quote:
Originally Posted by semtex (Post 259559)
I wonder just how common the cold start problem is. Like I wonder if everyone who's had the UpRev tune so far is experiencing this. Or if it's just a few of us.
SEMTEX...I'll try the same thing tomorrow morning and let you know what develops. Stand by for more info.

Back to my graph, I was actually disappointed. Am I being too critical or was the results acceptable?

semtex 10-31-2009 07:07 AM
Quote:
Originally Posted by myfirstz (Post 260132)
SEMTEX...I'll try the same thing tomorrow morning and let you know what develops. Stand by for more info.

Back to my graph, I was actually disappointed. Am I being too critical or was the results acceptable?
Honestly, I don't know. I can understand why you'd be disappointed. You have the same mods as me, right? Plus you have the JWT flywheel, which I would think would give you even more power at the wheels. I think maybe you should ask Sharif what his thoughts are. But at the same time, 302whp on Sharif's dyno is nothing to sneeze at either. For perspective, I was with Bullitt5897 when he did his bone stock baseline on Sharif's dyno. His car is also 6MT like ours, and he only made 254whp.

Forrest 10-31-2009 09:22 AM
Hope this helps you with the "cold starts" and having a tune.

I have no tune and zero mods.

Every now and again i start my car like normal and the mother beep LURCHES foward. Then with out the foot off the gas, the car starts racing foward like im pushing down hard so i have to shift it to second to get it to stop doing that.

Then a new thing happened, i lurched foward and started to race, then it totaly stops like it stop recieving gas, then apply alot of gas again jerk me foward, then stop applying gas and let it slow down, apply alot of gas and lurch me foward again. All while my foot was off the gas, clutch and break. If any of you was to watch me from outside the car it would look like a novice is just learning the clutch and pushing it in and out while foot on the gas.

This does not happen all the time, but i know to let the car sit for like 3-5 minutes before driving.

Hope this info helps those who are fearful the tune is causing the problem.

ps at like 33 degree's c, the z feels monsterously powerful.

RCZ 10-31-2009 10:09 AM
Forrest that was so hard to read man, but that does sound a little weird, I wonder if its the same thing they are talking about.

Yes, I did postpone my tune until you guys get this figured out.

B1nks 10-31-2009 11:40 AM
Quote:
Originally Posted by semtex (Post 259359)
Okay folks, all is not well. Two things are going on.

First, since getting the tune done, my car is doing something rather strange on cold starts. I start the car, wait my normal 30 seconds for everything to warm up, and when I slip it into 1st and tip the throttle in, there's like this weird dead spot. Gas pedal goes down a little, I start to feather the clutch in (same thing I've done a million times before), and nothing. The rpms just kinda don't go up, then all of a sudden, WHAM, the rpms jump up to where they ought to be and I go lurching forward like I've never driven stick before. But it only happens on cold starts, and goes away as soon as the car has warmed up a little more. Like by the time I get out of my neighborhood and make it to the first set of lights a half-mile from my subdivision, the problem is gone. I can launch as smoothly as always. No dead spot, no lag effect.

The first time this happened was yesterday morning when I left to go to the gym. I thought maybe it was my imagination or maybe it was human error on my part. But this morning, it did the same thing. It even did it when I was done with my workout and left the gym to come back home (car sat for about 2 hours). Something is f'd up. The driveability of my car has been compromised.

Okay, the second thing going on is this. I just got back from my DynoJet pulls. I have LOST approx. 15whp since my last DynoJet pull on the same DynoJet! Check it out. RunFiles 003 and 005 below are from today. RunFile 010 is from back in May.

http://i618.photobucket.com/albums/t...Jet_103009.jpg

I know, I know . . . different pulls on different days, months apart, right? But look at the run conditions:

http://i618.photobucket.com/albums/t...t_103009_b.jpg

The green and yellow lines are from today. The blue one is from May. It was cooler today than it was in May. Humidity is higher today than in May, but the correction factors should compensate for that.

Take these two things together -- the weird dead spot on cold start, plus the bizarre dyno results, and I think I'm being fair in saying that something ain't right!

I haven't been able to talk to Sharif yet, so I'm not sure what the next steps are. But right now, I'm about ready to have him flash my stock tune back in. This is not the desired result.
Ok well I haven't done a dyno pull on my original dyno but the same exact thing is happening with me as far as cold start drivability. I just had my done by uprev on Thurs. And I'm in Dallas right now and haven't contacted rich cause it's the weekend but I will be. Didn't drive my car again till last night and it did that along with this morning. A little upset but hopefully UpRev will make things right. I'm really curious about that horsepower loss, I have the opportunity to re-dyno my car on my original car possibly Monday but we'll see, might not have the funds.

John@Z1 10-31-2009 01:04 PM
Quote:
Originally Posted by B1nks (Post 260655)
Ok well I haven't done a dyno pull on my original dyno but the same exact thing is happening with me as far as cold start drivability. I just had my done by uprev on Thurs. And I'm in Dallas right now and haven't contacted rich cause it's the weekend but I will be. Didn't drive my car again till last night and it did that along with this morning. A little upset but hopefully UpRev will make things right.

We all know that Uprev will take care of the cold issue. But on Semtex's #10 dynojet run what the graph does at 4150rpm is kind of strange.

jpit 10-31-2009 02:43 PM
Had my car dyno tuned with Uprev on Thursday and have a similar problem. With a cold engine, when you push the gas pedal there is very little response then all of a sudden it just takes off. Operates normally after a few minutes.

semtex 10-31-2009 04:40 PM
Quote:
Originally Posted by Forrest (Post 260468)
Hope this helps you with the "cold starts" and having a tune.

I have no tune and zero mods.

Every now and again i start my car like normal and the mother beep LURCHES foward. Then with out the foot off the gas, the car starts racing foward like im pushing down hard so i have to shift it to second to get it to stop doing that.

Then a new thing happened, i lurched foward and started to race, then it totaly stops like it stop recieving gas, then apply alot of gas again jerk me foward, then stop applying gas and let it slow down, apply alot of gas and lurch me foward again. All while my foot was off the gas, clutch and break. If any of you was to watch me from outside the car it would look like a novice is just learning the clutch and pushing it in and out while foot on the gas.

This does not happen all the time, but i know to let the car sit for like 3-5 minutes before driving.

Hope this info helps those who are fearful the tune is causing the problem.

ps at like 33 degree's c, the z feels monsterously powerful.
What you're describing is NOT what is happening with my car. And what my car is doing started the morning after the tune. But we'll get to the bottom of it soon enough. What you're describing sounds kinda scary, to be honest.

caneman88 10-31-2009 06:12 PM
After the tune on Wednesday at UpRev I noticed the same thing I have the AT but you push the throttle and it almost seems like your in neutral the the gear grabs and it takes off. Also the Vallet mode did not work they said they would work on a fix for it Theft mode did not seem to work either.

semtex 10-31-2009 07:14 PM
Holy moly. Premature product release, anyone?

myfirstz 10-31-2009 07:25 PM
Quote:
Originally Posted by semtex (Post 261275)
Holy moly. Premature product release, anyone?
Hey Semtex....mine is doing the same. Exactly as you described. Hmmm...when I talked to Sharif at the time I got my tune last week, he indicated the "bugs" were worked out. I think UpRev didn't catch this before releasing. I'm gonna talk to Sharif and see what his thoughts are.

semtex 10-31-2009 08:20 PM
Quote:
Originally Posted by myfirstz (Post 261278)
Hey Semtex....mine is doing the same. Exactly as you described. Hmmm...when I talked to Sharif at the time I got my tune last week, he indicated the "bugs" were worked out. I think UpRev didn't catch this before releasing. I'm gonna talk to Sharif and see what his thoughts are.
Thx Niko. It just so happened that I was on the phone talking to Sharif about this when I looked at your post, so I let him know that your car is doing this as well.

zman1910 10-31-2009 08:23 PM
They're comin' out of the woodwork folks....hopefully it's something simple

NIZMOZ 10-31-2009 10:19 PM
Just run in stock tune folks till you get a updated map to fix your tunes from Jared.

B1nks 11-01-2009 01:17 AM
and how are we supposed to do this ?^^ Don't even know if the extra option tunes that come with it work and since the valet and theft mode don't there is a doubt the others do too.. :-/

semtex 11-01-2009 05:17 PM
Quote:
Originally Posted by NIZMOZ (Post 261590)
Just run in stock tune folks till you get a updated map to fix your tunes from Jared.
I asked Sharif about this and he said it won't fix anything. What he explained to me is that, from the sounds of things, the issue is with the UpRev ROM, not any particular tune/map per se (which is why so many people are experiencing the same issue). When you get your car tuned, the first thing that happens is that they flash in the UpRev ROM over your car's stock ROM. All the maps are contained within that ROM. In other words, you don't switch between ROMs. You switch between maps within the ROM. So even if we switch to an alternate stock map, if the issue is within the ROM itself as Sharif suspects, the problem will still be there. Or to put it another way, the stock map is still an UpRev stock map, not the one that came with your car. The only thing we can do, per Sharif, is wait for UpRev to fix the bug.

RCZ 11-01-2009 05:32 PM
Not really, you can take the map completely off and revert back to stock.

semtex 11-01-2009 05:35 PM
Quote:
Originally Posted by RCZ (Post 262320)
Not really, you can take the map completely off and revert back to stock.
You're assuming he made a backup of my stock ROM. He didn't. He said it would have taken an hour to do that via a ROM dump.

NIZMOZ 11-01-2009 06:02 PM
Quote:
Originally Posted by semtex (Post 262302)
I asked Sharif about this and he said it won't fix anything. What he explained to me is that, from the sounds of things, the issue is with the UpRev ROM, not any particular tune/map per se (which is why so many people are experiencing the same issue). When you get your car tuned, the first thing that happens is that they flash in the UpRev ROM over your car's stock ROM. All the maps are contained within that ROM. In other words, you don't switch between ROMs. You switch between maps within the ROM. So even if we switch to an alternate stock map, if the issue is within the ROM itself as Sharif suspects, the problem will still be there. Or to put it another way, the stock map is still an UpRev stock map, not the one that came with your car. The only thing we can do, per Sharif, is wait for UpRev to fix the bug.
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.

NIZMOZ 11-01-2009 06:03 PM
Quote:
Originally Posted by semtex (Post 262324)
You're assuming he made a backup of my stock ROM. He didn't. He said it would have taken an hour to do that via a ROM dump.
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.

semtex 11-01-2009 06:36 PM
Quote:
Originally Posted by NIZMOZ (Post 262355)
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.
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).

Quote:
Originally Posted by NIZMOZ (Post 262355)
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.
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.

semtex 11-01-2009 06:49 PM
Quote:
Originally Posted by NIZMOZ (Post 262358)
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.
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.

jpit 11-01-2009 07:17 PM
When I switch to the stock map I still seem to have the problem.


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