Disco 2 Chipped TD5 vs. new MoT rules

My colleague has had his TD5 chipped and has had a vaiable vane turbo fitted. When he accelerates, thick black smoke pours out of the exhaust.

Is that going to be a problem with the new MoT?

Shouldnt be unles it smokes from standstill. Afaik the mot is engine idle smoke, not revving or underload

Black smoke = a bad tune

Yes it's a problem, so it's now very very undervalued and worth next to nothing ....

Tell you what, I'll give him £50 sight unseen for it ... and I'm cuttin' me own froat at that!

Mind, he'd have to deliver it to Doncaster for that too ...

lynall said:

Black smoke = a bad tune

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Not really. Usually an imbalance of fuel and air. Highly tuned diesels wil almost always smoke. Depends when it smokes really

bankz5152 said:

Not really. Usually an imbalance of fuel and air. Highly tuned diesels wil almost always smoke. Depends when it smokes really

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Imbalance = bad tune
Ive always liked diesals, what I hate is black smoke as its not needed on anything remotely modern.
Plus people might see a smokey car and it might come up in conversation but car make unknown, but everyone knows what a land rover looks like and it gives the whole lot a bad name.

No harm in a bit of smoke.

Dumping smoke at every point in the rev range id tend to agree, most likely a poor tune. However smoke at standstill when revving or when labouring not so much as the turbo isnt feeding it enough air, soon as the boost picks up smokes gone.

Any smoke is going to class as a major fault and a fail

bankz5152 said:

Dumping smoke at every point in the rev range id tend to agree, most likely a poor tune. However smoke at standstill when revving or when labouring not so much as the turbo isnt feeding it enough air, soon as the boost picks up smokes gone.

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Smoke when labouring maybe okay as mot guy wont see that but smoke at a standstill on any modern ish diesel (ie post tdi) has got to be either a mechanical fault or a pants tune.

Muppetdaze said:

Any smoke is going to class as a major fault and a fail

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Going to be fun with the tweaked tdis then

Easy, fill em with redex and drive it like a hire car for the half hour before the test.
Thrash it like a stereotypical Eton schoolmaster.

lynall said:

Smoke when labouring maybe okay as mot guy wont see that but smoke at a standstill on any modern ish diesel (ie post tdi) has got to be either a mechanical fault or a pants tune.

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Agreed.

Muppetdaze said:

Easy, fill em with redex and drive it like a hire car for the half hour before the test.
Thrash it like a stereotypical Eton schoolmaster.

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I drive both my tdis like that all the time and they still chuff!
One totally std and the other slightly messed with, neither is fast in normal car terms.