New motor, do I need a retune?

louiey370z · 04-12-2016, 03:28 PM

so putting in a new motor with low miles and I'm wondering if I need to get it retuned as I got it dynotuned previously. Is it necessary? I was told that it might need to be put on the dyno just in case to see if numbers match up, but that requires even more money and I'm not sure if it's necessary. Thanks guys

Rahul718 · 04-12-2016, 04:10 PM

Quote:

Originally Posted by louiey370z

so putting in a new motor with low miles and I'm wondering if I need to get it retuned as I got it dynotuned previously. Is it necessary? I was told that it might need to be put on the dyno just in case to see if numbers match up, but that requires even more money and I'm not sure if it's necessary. Thanks guys

I would say absolutely. No 2 motors are the same, even off the same assembly line. Your dyno tune was made for your old engine. It may line up with the new one, but chances are it'll require some adjustments.

louiey370z · 04-12-2016, 05:17 PM

Quote:

Originally Posted by Rahul718

I would say absolutely. No 2 motors are the same, even off the same assembly line. Your dyno tune was made for your old engine. It may line up with the new one, but chances are it'll require some adjustments.

Could it potentially mess anything up severely if I were to take some time off before taking it back to get it tuned? By that, I mean driving around before headed to the shop? Reason I ask is because funds are pretty low after getting a new motor.

Chuck33079 · 04-12-2016, 05:23 PM

Depends on why you popped your last one. I wouldn't go through all that and not re-tune. Why not reflash to the stock tune for the meantime?

Rahul718 · 04-12-2016, 06:04 PM

Quote:

Originally Posted by louiey370z

Could it potentially mess anything up severely if I were to take some time off before taking it back to get it tuned? By that, I mean driving around before headed to the shop? Reason I ask is because funds are pretty low after getting a new motor.

I wouldn't worry. People drive around with generic tunes and other people's tunes all the time when they don't want to shell out money for a custom tune

Chuck33079 · 04-12-2016, 06:11 PM

Considering how easy it is to flash back to stock, I can't imagine why you wouldn't just run the stock tune until you can get it tuned again.

louiey370z · 04-12-2016, 06:55 PM

Quote:

Originally Posted by Chuck33079

Considering how easy it is to flash back to stock, I can't imagine why you wouldn't just run the stock tune until you can get it tuned again.

How easy is easy? Does it require me to take it to a shop? I didn't tune this myself. On the uprev software

Chuck33079 · 04-12-2016, 07:02 PM

Put the cable in and select the option to ref lash back to stock.

louiey370z · 04-12-2016, 07:04 PM

Quote:

Originally Posted by Chuck33079

Put the cable in and select the option to ref lash back to stock.

I don't have a cable. I had a shop tune it for me.

Chuck33079 · 04-12-2016, 07:19 PM

You should pick one up. Otherwise, once you swap the motor limp it over to the shop and have him switch it back to stock. A good shop wouldn't charge you.

louiey370z · 04-12-2016, 07:31 PM

Quote:

Originally Posted by Chuck33079

You should pick one up. Otherwise, once you swap the motor limp it over to the shop and have him switch it back to stock. A good shop wouldn't charge you.

I'll look into it. Can I buy the cables in stores or only online?

Chuck33079 · 04-12-2016, 07:33 PM

From uprev.

SouthArk370Z · 04-13-2016, 03:04 AM

If you are installing the same mods, then the old tune should be "good enough" - ie, may not make optimum power but shouldn't hurt anything. But I wouldn't push it very hard until tune is checked.

04-12-2016, 03:28 PM	#1 (permalink)
louiey370z Track Member Join Date: Mar 2015 Location: AZ Posts: 515 Drives: '11 Nissan 370z Rep Power: 16	New motor, do I need a retune? so putting in a new motor with low miles and I'm wondering if I need to get it retuned as I got it dynotuned previously. Is it necessary? I was told that it might need to be put on the dyno just in case to see if numbers match up, but that requires even more money and I'm not sure if it's necessary. Thanks guys

04-12-2016, 05:23 PM	#4 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29538	Depends on why you popped your last one. I wouldn't go through all that and not re-tune. Why not reflash to the stock tune for the meantime? SouthArk370Z likes this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

04-12-2016, 06:11 PM	#6 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29538	Considering how easy it is to flash back to stock, I can't imagine why you wouldn't just run the stock tune until you can get it tuned again. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

04-12-2016, 07:02 PM	#8 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29538	Put the cable in and select the option to ref lash back to stock. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

04-12-2016, 07:19 PM	#10 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29538	You should pick one up. Otherwise, once you swap the motor limp it over to the shop and have him switch it back to stock. A good shop wouldn't charge you. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

04-12-2016, 07:33 PM	#12 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29538	From uprev. louiey370z likes this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

04-13-2016, 03:04 AM	#13 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324197	If you are installing the same mods, then the old tune should be "good enough" - ie, may not make optimum power but shouldn't hurt anything. But I wouldn't push it very hard until tune is checked. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Do I Need a Retune?	FLUJOKE	Tuning	2	03-02-2016 05:11 PM
Retune	grant	Tuning	5	05-06-2015 12:13 PM
Retune needed after new OEM motor?	TopgunZ	Forced Induction	9	07-14-2014 02:44 PM
Retune with Takedas	ANMVQ	Tuning	46	06-25-2013 02:23 PM
Should I retune my ECU?	someday	Intake/Exhaust	2	07-31-2011 07:00 PM