EGR Bypass

Pumpwater · 30th October 2020, 11:09

Has any member who has fitted an EGR bypass failed the MOT as a result?

kitt · 30th October 2020, 11:31

I have an EGR bypass, Maf less custom remap and manual boost control running an extra 5psi, and it passes the MOT every time.

spyder · 30th October 2020, 11:43

Quote:

Originally Posted by Pumpwater

Has any member who has fitted an EGR bypass failed the MOT as a result?

For the past 8 years, yes..

bendrick · 30th October 2020, 12:45

Quote:

Originally Posted by spyder

For the past 8 years, yes..

Failed for the past 8 years or passed for the last 8 years?

tourer · 30th October 2020, 13:01

Quote:

Originally Posted by spyder

For the past 8 years, yes..

Must be time to take it off, by now.

Arctic · 30th October 2020, 13:26

Quote:

Originally Posted by Pumpwater

Has any member who has fitted an EGR bypass failed the MOT as a result?

HI Mike.
There is a chance of failing the MOT if the tester notices that the EGR as been doctored or changed, i have not heard of that happening.

As long as the EGR is clean also the manifold plus MAP sensor, you have a new clean air filter is should fly through the MOT.

The secret trick or should i say the best trick is to run the car up temperature, ie drive it like you have stole it for at least 30 minutes or more arriving at your pre-booked MOT test 5 mins before your time.

The engine should then be hot enough for the emission test which i think if i am right should 60c minimum but best if its 80c

Best tip is try and coincide your yearly service oil, filters etc with your MOT test a week before or even a few days before

Pumpwater · 30th October 2020, 21:16

It passed today, with EGR still in place. The emission test read 0.28 with a maximum permissible of 1.5 so the bypass must be working I guess. Advisories were slightly worn brake discs and brake pipe covered in grease (?)

Mike Noc · 30th October 2020, 21:50

If they changed the diesel MOT to an analytical test like they do for the petrol engines then having an EGR bypass could become an issue, but the diesel emission test is just for visible smoke, so an increase in NOx won't be detected.

30th October 2020, 11:09	#1
Pumpwater Loves to post Rover 75 CDTi Firefrost Red Join Date: Apr 2008 Location: Durham Posts: 470 Thanks: 96 Thanked 55 Times in 38 Posts	EGR Bypass Has any member who has fitted an EGR bypass failed the MOT as a result? __________________ Eat drink and be merry, for tomorrow they may make it illegal.

30th October 2020, 21:16	#7
Pumpwater Loves to post Rover 75 CDTi Firefrost Red Join Date: Apr 2008 Location: Durham Posts: 470 Thanks: 96 Thanked 55 Times in 38 Posts	It passed today, with EGR still in place. The emission test read 0.28 with a maximum permissible of 1.5 so the bypass must be working I guess. Advisories were slightly worn brake discs and brake pipe covered in grease (?) __________________ Eat drink and be merry, for tomorrow they may make it illegal.

30th October 2020, 11:31	#2
kitt Avid contributor BMW F30 Had a MG ZT Join Date: Oct 2016 Location: Cannock Posts: 209 Thanks: 59 Thanked 69 Times in 48 Posts	I have an EGR bypass, Maf less custom remap and manual boost control running an extra 5psi, and it passes the MOT every time.

30th October 2020, 21:50	#8
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,547 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	If they changed the diesel MOT to an analytical test like they do for the petrol engines then having an EGR bypass could become an issue, but the diesel emission test is just for visible smoke, so an increase in NOx won't be detected.