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(Post Link) post #1 of 3 Old 03-02-14 Thread Starter
Status: Contra principia negantem non est disputandum
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De CAT's, MOT's and the Law.

I'm asking this to all the Petrol/CAT equipped sections of the forum as not all of us frequent the other sections.

There appears to be somewhat of a fuelled hysteria knee jerk panic attack over DPF removal. So who better to ask the question to than all you petrol heads who have had this legal requirement to deal with for years.

DPF removal is being discussed at great length (on the 159/Brera forums) but with even less detail and specific inspection criteria as of this morning. However there are certain similarities with the introduction of petrol car CAT testing that I struggle with and maybe some of you could explain this to me. CAT's on spark ignition have been a requirement and formed part of the MOT inspection for more years than I care to remember so should be well implemented and enforced one would assume by now.

So the question I have is how can petrol vehicles which have had the Pre CATS and/or CAT's removed still pass MOT inspection ? Ι do not mean just emissions, because they obviously do even with one set of cats.

Is this just a case of testers turning a blind eye or is there another agenda here.

With all this fuelled hysteria over DPF's, MOT's, Insurance and type approval what are all you petrol owners doing ?

Shouldn't you be worried that your cars are just as "illegal" as some people are trying to convince us diesel owners that ours are? "

The "Alfatune" full works
60mm Core Full size RS500 FMIC
AEM W/M Injection
Koni struts / Novitec springs
Grooved & Dimpled discs and pads
19" Prodrive wheels, Michelin Pilot Super Sport
Halo's HID's & LED's
Hub dyno'd at well over 500lbft at the wheels ! and that's limited.
Thats over 750 Nm for you figure fiddlers
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I have removed the pre-cat on my 1996 GTV Turbo and made a emissiontest recently at a Bosch Service Point. It was a little bit tight but it passed the test. Main-cat is still original. (Original pre-cat and main-cat was/are a metal one !!! Thats ALFA...
It has a bigger Turbo, injectors and custom chips and it still passed the test thanks to the closed-loop-lamda controll and EURO1 emission category.
I can post emissiontest values tomorrow when someone will know it.
So, i think its just a bit luck or experience to be legal...especially on newer cars...
I never had a Diesel and i think i will never have one because of the smoke....but...sometimes my GTV runs so rich, i thougt a drive a Diesel... lol
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(Post Link) post #3 of 3 Old 03-02-14 Thread Starter
Status: Contra principia negantem non est disputandum
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Thanks for the response. Maybe I should have said that question I'm asking is really its only relevant to the UK.

I'm not worried in the slightest about the smoke test as mine is approx 5.33% of the test limit.
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