UpRev ECU tune results for Semtex's Z

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

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

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

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

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

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

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.

semtex · 10-31-2009, 04:40 PM

Quote:

Originally Posted by Forrest

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.

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.

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.

10-30-2009, 03:01 PM	#1 (permalink)
John@Z1 The370Z.com Sponsor Join Date: Nov 2008 Location: GA Posts: 1,589 Drives: Turbos Rep Power: 21	What was the smothing on that dyno jet graph? __________________ Z1 Motorsports will beat any advertised price on Nissan OEM Parts! 770-838-7777 ext 311 AIM: JohnatZ1 email: John@Z1motorsports.com

10-30-2009, 03:38 PM	#3 (permalink)
John@Z1 The370Z.com Sponsor Join Date: Nov 2008 Location: GA Posts: 1,589 Drives: Turbos Rep Power: 21	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. __________________ Z1 Motorsports will beat any advertised price on Nissan OEM Parts! 770-838-7777 ext 311 AIM: JohnatZ1 email: John@Z1motorsports.com

10-30-2009, 05:24 PM	#8 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 55 Posts: 5,995 Drives: People to drink Rep Power: 34	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. __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

10-31-2009, 09:22 AM	#11 (permalink)
Forrest Track Member Join Date: Mar 2009 Location: california 707! Posts: 677 Drives: 09 370z Blk 6mt sprt Rep Power: 260	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. __________________ my pictures http://www.the370z.com/members/forrest-albums-370z.html

10-31-2009, 06:12 PM	#13 (permalink)
caneman88 Base Member Join Date: Mar 2009 Location: San Antonio TX Posts: 225 Drives: PG 370Z,M-35,F150 Rep Power: 18	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. __________________ GO CANES \|\|Stillen CB Exhaust \|\|Berk HFC \|\|Stillen G3 Intake\|\|UpRev Tuned\|\|S-Tune Front Spoiler\|\|Setrab 19 Oil Cooler\|\|

10-30-2009, 04:42 PM	#6 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1120	OK This is making me rethink my tune for tomorrow...

10-31-2009, 10:09 AM	#14 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1120	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.

10-31-2009, 02:43 PM	#15 (permalink)
jpit Enthusiast Member Join Date: Feb 2009 Location: Washington State Posts: 440 Drives: 370Z Tour MT w/Spt Rep Power: 18	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.

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