Uprev Flash and Emissions Test

merkil · 05-10-2018, 07:57 PM

Hi Everyone,

Searched and couldn't really find the answer but wanted to know if you need to reflash the ecu from an uprev tune to pass emissions in Ontario. I don't have any DTC codes disabled and have no CEL light on but Im unsure if I need to reflash the stock ecu back for when they hook up the machine to do the emissions test.

Can anyone shed any light on this?

Thanks!

Asus_ · 05-11-2018, 12:05 AM

I'm sure someone who knows more will chime in soon, but imo I dont see an issue with the Uprev Tune itself as long as you have a good tune and your running a normal Air/Fuel ratio.

seymore4 · 05-11-2018, 09:25 AM

Unless you have codes disabled in the tune you should pass. The reflash itself has no impact on emissions. Just don't reflash right before you go as it will clear all the readiness checks and you'll have to drive a bit to cycle through them again.

mults · 05-11-2018, 02:29 PM

If you're anything like OHIO, all they do here is to hook up into the OBDII port to check for any recent (or stored) codes. If none are found, you should be good to go.

On my 40th, I have a tune and other add-ons (see signature) and my car has passed inspection every year. Now, if they do the "tailpipe test", there may be a different outcome...

Tmp_unlimited · 05-11-2018, 05:23 PM

As long as your CEL is off and all your monitors are ready you should pass

merkil · 05-15-2018, 08:00 PM

Thanks for all the replies. Yup, passed no problem and did not reflash anything.

mishuko · 05-17-2018, 03:23 PM

Quote:

Originally Posted by merkil

Thanks for all the replies. Yup, passed no problem and did not reflash anything.

What mods you running out of curiosity?

05-10-2018, 07:57 PM	#1 (permalink)
merkil Base Member Join Date: Oct 2013 Location: Brantford, Ontario Posts: 63 Drives: 2011 370z Rep Power: 12	Uprev Flash and Emissions Test Hi Everyone, Searched and couldn't really find the answer but wanted to know if you need to reflash the ecu from an uprev tune to pass emissions in Ontario. I don't have any DTC codes disabled and have no CEL light on but Im unsure if I need to reflash the stock ecu back for when they hook up the machine to do the emissions test. Can anyone shed any light on this? Thanks!

05-11-2018, 02:29 PM	#4 (permalink)
mults A True Z Fanatic Join Date: Aug 2011 Location: Cleveland, OH Age: 69 Posts: 1,830 Drives: 2010 (40th) #706 Rep Power: 16886	If you're anything like OHIO, all they do here is to hook up into the OBDII port to check for any recent (or stored) codes. If none are found, you should be good to go. On my 40th, I have a tune and other add-ons (see signature) and my car has passed inspection every year. Now, if they do the "tailpipe test", there may be a different outcome... __________________ mults 40th Anniversary 'Z', 312.06HP/260.58TQ (Dynosty EcuTek Tune) Build Date/Number: 1/27/2010 #706 Berk HFC + CBE, R2C CAI, Clear Bra, Cleveland Z Club Last edited by mults; 05-16-2018 at 07:29 AM.

05-15-2018, 08:00 PM	#6 (permalink)
merkil Base Member Join Date: Oct 2013 Location: Brantford, Ontario Posts: 63 Drives: 2011 370z Rep Power: 12	Thanks for all the replies. Yup, passed no problem and did not reflash anything. mishuko likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
MD emissions test	TheBoomSpoon	North East Region	2	06-06-2019 11:44 AM
uprev and emissions	jamesj1996	Tuning	33	10-01-2014 01:46 AM
UPREV Tuned can't pass EMISSIONS	TPrelude-370z	Engine & Drivetrain	53	05-03-2014 12:12 PM
Emissions Test	craig1391sf	Intake/Exhaust	3	09-07-2013 08:44 AM
Emissions Test Fail	craig1391sf	Intake/Exhaust	4	03-19-2013 11:35 PM

05-11-2018, 12:05 AM	#2 (permalink)
Asus_ Enthusiast Member Join Date: Sep 2015 Location: neverland. Posts: 348 Drives: 2011 370z T/S Rep Power: 1171	I'm sure someone who knows more will chime in soon, but imo I dont see an issue with the Uprev Tune itself as long as you have a good tune and your running a normal Air/Fuel ratio.

05-11-2018, 09:25 AM	#3 (permalink)
seymore4 Track Member Join Date: Nov 2010 Location: West coast Age: 41 Posts: 556 Drives: 2010 nismo Rep Power: 6727	Unless you have codes disabled in the tune you should pass. The reflash itself has no impact on emissions. Just don't reflash right before you go as it will clear all the readiness checks and you'll have to drive a bit to cycle through them again.

05-11-2018, 05:23 PM	#5 (permalink)
Tmp_unlimited Base Member Join Date: Apr 2015 Location: Markham Ontario Posts: 33 Drives: 12' 370z Rep Power: 10	As long as your CEL is off and all your monitors are ready you should pass