MTC downpipes

t5pilot · 01-28-2019, 06:04 PM

Quote:

Originally Posted by jamiesecker

Quote:

Originally Posted by SteveChester

I did that because it was quite cheap and made a reasonable difference. Not sure what else I can do don't fancy spending 2k on an MPE.

The guy that fitted the down pipes also does MOTs

I didn't think the primary cats effect the MOT? Or have I been ill informed?

Should be ok provided secondary cats are still doing their stuff

SteveChester · 01-29-2019, 01:33 AM

I'll find out in April

Tengocity · 01-29-2019, 01:35 PM

Quote:

Originally Posted by t5pilot

Quote:

Originally Posted by jamiesecker

Quote:

Originally Posted by SteveChester

I did that because it was quite cheap and made a reasonable difference. Not sure what else I can do don't fancy spending 2k on an MPE.

The guy that fitted the down pipes also does MOTs

I didn't think the primary cats effect the MOT? Or have I been ill informed?

Should be ok provided secondary cats are still doing their stuff

Does anyone know this for sure? The secondary cats are mainly for emissions control during cold start, until the primary cats are up to temperature, which is what I understand the cold start higher revs are for- warming up the cats ASAP.

So I've always understood that it's the primaries that count and secondary cats that can be removed without MOT hassle in a car. I've done that with my Boxster and it passed its MOT subsequently.

I'll certainly be fascinated to see how SteveChester gets on with his!

SteveChester · 01-29-2019, 03:46 PM

Yep I could take it to the guy that did the install as he does MOTs but I might take it to Halfords and see what they make of it

SteveChester · 01-29-2019, 03:47 PM

But interested to see if anyone else has done the downpipes - might post a question on cutters to see as well.

t5pilot · 01-30-2019, 02:46 AM

I'll see if I can get mine on the MOT testing machine. It may be a while, but I'll update this post in due course. Unless someone beats me to it...

Smee · 01-30-2019, 09:20 AM

Interested in the results.... wish someone would do a before and after with flaps open and closed so I can compare.

SteveChester · 03-12-2019, 12:40 PM

Quote:

Originally Posted by t5pilot

I'll see if I can get mine on the MOT testing machine. It may be a while, but I'll update this post in due course. Unless someone beats me to it...

Have you had chance to do this yet?

t5pilot · 03-12-2019, 12:43 PM

Quote:

Originally Posted by SteveChester

Quote:

Originally Posted by t5pilot

I'll see if I can get mine on the MOT testing machine. It may be a while, but I'll update this post in due course. Unless someone beats me to it...

Have you had chance to do this yet?

No. I'll see if I can get it in on Saturday...

SteveChester · 03-12-2019, 12:55 PM

Quote:

Originally Posted by t5pilot

Quote:

Originally Posted by SteveChester

Quote:

Originally Posted by t5pilot

I'll see if I can get mine on the MOT testing machine. It may be a while, but I'll update this post in due course. Unless someone beats me to it...

Have you had chance to do this yet?

No. I'll see if I can get it in on Saturday...

Cool thanks mine is due shortly so just need to see if it would pass "as is" or I need to find a nice friendly MOT man....

SteveChester · 03-12-2019, 02:49 PM

I've found a place that does "pre mot" checks so taking it down Saturday to get it checked out emissions wise...

t5pilot · 03-12-2019, 06:04 PM

Quote:

Originally Posted by SteveChester

I've found a place that does "pre mot" checks so taking it down Saturday to get it checked out emissions wise...

That's good. I can't get mine done until at least a week later now.
Please do update the thread with your results

SteveChester · 03-13-2019, 03:30 AM

Expecting a big F......

Might see if he's up for a pass if I open my wallet and hand him a couple of notes...............

Smee · 03-13-2019, 06:32 AM

Got a lot riding on this.... I need a pass or my plans for stage 2 are done

SteveChester · 03-16-2019, 05:57 AM

Easy PASS today. It was well within the limits ( I have retained my secondary cats ) - and I watched him on the machine doing the test.

He did ask if it was decatted so I confessed. But he said no one is going to check as you'd have to remove the plastic engine guard on the underbody to see really.

So an M4 with the primary decats removed does pass an MOT . As stated above I do have my secondary cats in place so not sure if it would pass fully decatted - suspect not.

Also was still running stage 2 map.

SteveChester · 03-16-2019, 06:19 AM

Quote:

Originally Posted by Smee

Got a lot riding on this.... I need a pass or my plans for stage 2 are done

See above ^^

Tengocity · 03-16-2019, 06:49 AM

Looking forward to hearing your car next week!

SteveChester · 03-16-2019, 06:54 AM

Quote:

Originally Posted by Tengocity

Looking forward to hearing your car next week!

Video on page 1 - but does sound better in the flesh.......

See you on Thursday at Spa!!

SteveChester · 03-16-2019, 06:55 AM

Well worth £240....

SteveChester · 03-16-2019, 06:56 AM

Quite a few places on the web that buy old cats so have submitted a few requests to see what price I can sell them for.

Smee · 03-16-2019, 06:01 PM

Quote:

Originally Posted by SteveChester

Easy PASS today. It was well within the limits ( I have retained my secondary cats ) - and I watched him on the machine doing the test.

He did ask if it was decatted so I confessed. But he said no one is going to check as you'd have to remove the plastic engine guard on the underbody to see really.

So an M4 with the primary decats removed does pass an MOT . As stated above I do have my secondary cats in place so not sure if it would pass fully decatted - suspect not.

Also was still running stage 2 map.

When you say easy. I mean like not even any doubt?

SteveChester · 03-16-2019, 11:51 PM

Quote:

Originally Posted by Smee

Quote:

Originally Posted by SteveChester

Easy PASS today. It was well within the limits ( I have retained my secondary cats ) - and I watched him on the machine doing the test.

He did ask if it was decatted so I confessed. But he said no one is going to check as you'd have to remove the plastic engine guard on the underbody to see really.

So an M4 with the primary decats removed does pass an MOT . As stated above I do have my secondary cats in place so not sure if it would pass fully decatted - suspect not.

Also was still running stage 2 map.

When you say easy. I mean like not even any doubt?

Yep emissions well within limits. Unless they do a visual inspection and spot them missing, which they aren't going to do, you'll get a pass.

01-29-2019, 01:33 AM	#24
SteveChester Brigadier General 2472 Rep 4,653 Posts Drives: F82 M4 Join Date: Oct 2009 Location: Chester iTrader: (0) Garage List 2014 BMW F82 M4 [0.00]	I'll find out in April __________________ Steve Roberts UK F82 M4 I'm running the 2024 London Marathon for the British Forces Foundation - https://www.justgiving.com/fundraising/sr5/
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01-29-2019, 03:46 PM	#26
SteveChester Brigadier General 2472 Rep 4,653 Posts Drives: F82 M4 Join Date: Oct 2009 Location: Chester iTrader: (0) Garage List 2014 BMW F82 M4 [0.00]	Yep I could take it to the guy that did the install as he does MOTs but I might take it to Halfords and see what they make of it __________________ Steve Roberts UK F82 M4 I'm running the 2024 London Marathon for the British Forces Foundation - https://www.justgiving.com/fundraising/sr5/
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01-29-2019, 03:47 PM	#27
SteveChester Brigadier General 2472 Rep 4,653 Posts Drives: F82 M4 Join Date: Oct 2009 Location: Chester iTrader: (0) Garage List 2014 BMW F82 M4 [0.00]	But interested to see if anyone else has done the downpipes - might post a question on cutters to see as well. __________________ Steve Roberts UK F82 M4 I'm running the 2024 London Marathon for the British Forces Foundation - https://www.justgiving.com/fundraising/sr5/
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01-30-2019, 02:46 AM	#28
t5pilot Colonel 978 Rep 2,069 Posts Drives: M4 CP & S1000 XR Join Date: Oct 2015 Location: Yorkshire - UK iTrader: (1)	I'll see if I can get mine on the MOT testing machine. It may be a while, but I'll update this post in due course. Unless someone beats me to it... __________________ /// BM3 + M-Power ///
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01-30-2019, 09:20 AM	#29
Smee Colonel 505 Rep 2,152 Posts Drives: BMW M4 F83 Join Date: Aug 2016 Location: Norfolk iTrader: (0)	Interested in the results.... wish someone would do a before and after with flaps open and closed so I can compare.
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03-12-2019, 02:49 PM	#33
SteveChester Brigadier General 2472 Rep 4,653 Posts Drives: F82 M4 Join Date: Oct 2009 Location: Chester iTrader: (0) Garage List 2014 BMW F82 M4 [0.00]	I've found a place that does "pre mot" checks so taking it down Saturday to get it checked out emissions wise... __________________ Steve Roberts UK F82 M4 I'm running the 2024 London Marathon for the British Forces Foundation - https://www.justgiving.com/fundraising/sr5/
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03-13-2019, 03:30 AM	#35
SteveChester Brigadier General 2472 Rep 4,653 Posts Drives: F82 M4 Join Date: Oct 2009 Location: Chester iTrader: (0) Garage List 2014 BMW F82 M4 [0.00]	Expecting a big F...... Might see if he's up for a pass if I open my wallet and hand him a couple of notes............... __________________ Steve Roberts UK F82 M4 I'm running the 2024 London Marathon for the British Forces Foundation - https://www.justgiving.com/fundraising/sr5/
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03-13-2019, 06:32 AM	#36
Smee Colonel 505 Rep 2,152 Posts Drives: BMW M4 F83 Join Date: Aug 2016 Location: Norfolk iTrader: (0)	Got a lot riding on this.... I need a pass or my plans for stage 2 are done
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03-16-2019, 05:57 AM	#37
SteveChester Brigadier General 2472 Rep 4,653 Posts Drives: F82 M4 Join Date: Oct 2009 Location: Chester iTrader: (0) Garage List 2014 BMW F82 M4 [0.00]	Easy PASS today. It was well within the limits ( I have retained my secondary cats ) - and I watched him on the machine doing the test. He did ask if it was decatted so I confessed. But he said no one is going to check as you'd have to remove the plastic engine guard on the underbody to see really. So an M4 with the primary decats removed does pass an MOT . As stated above I do have my secondary cats in place so not sure if it would pass fully decatted - suspect not. Also was still running stage 2 map. __________________ Steve Roberts UK F82 M4 I'm running the 2024 London Marathon for the British Forces Foundation - https://www.justgiving.com/fundraising/sr5/
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03-16-2019, 06:49 AM	#39
Tengocity General 8566 Rep 19,982 Posts Drives: 911, Cayenne Turbo, Disco 4 Join Date: Sep 2013 Location: Crieff, Perthshire, Scotland iTrader: (0)	Looking forward to hearing your car next week! __________________ Current: Porsche 911 991 C4S, Porsche Cayenne Turbo, Land Rover Discovery 4. Gone...G01 X3 M40i, Cayman S 987, F31 340i, Cayman GT4, F82 M4 CP, Lotus Exige V6, G20 330e, F30 330e, Boxster S 987, F31 335d, Mini Cooper SD, E89 Z4, E90 330d 320d, E60 520d, E46 330d 320d, MX5s, E30 325i
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03-16-2019, 06:55 AM	#41
SteveChester Brigadier General 2472 Rep 4,653 Posts Drives: F82 M4 Join Date: Oct 2009 Location: Chester iTrader: (0) Garage List 2014 BMW F82 M4 [0.00]	Well worth £240.... Attached Images __________________ Steve Roberts UK F82 M4 I'm running the 2024 London Marathon for the British Forces Foundation - https://www.justgiving.com/fundraising/sr5/
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03-16-2019, 06:56 AM	#42
SteveChester Brigadier General 2472 Rep 4,653 Posts Drives: F82 M4 Join Date: Oct 2009 Location: Chester iTrader: (0) Garage List 2014 BMW F82 M4 [0.00]	Quite a few places on the web that buy old cats so have submitted a few requests to see what price I can sell them for. __________________ Steve Roberts UK F82 M4 I'm running the 2024 London Marathon for the British Forces Foundation - https://www.justgiving.com/fundraising/sr5/
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