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What relevance does the 200 cell bit have? Power? Sound?

Looking at other threads a downpipe is all that is needed for power. Any ideas in price of just the downpipe?

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What relevance does the 200 cell bit have? Power? Sound?

Looking at other threads a downpipe is all that is needed for power. Any ideas in price of just the downpipe?

200 cell is less restrictive that 400. Simples!

Have you fully read the above post?

Loskie, I see where your coming from! :thumbup:

200 cell is less restrictive that 400. Simples!

Have you fully read the above post?

Loskie, I see where your coming from! :thumbup:

The post above doesn't explain that. Also it's 'you're' not 'your'. ;-)

The post above doesn't explain that. Also it's 'you're' not 'your'. ;-)

Bye.

Bet you drink Horlicks.

What relevance does the 200 cell bit have? Power? Sound?

Looking at other threads a downpipe is all that is needed for power. Any ideas in price of just the downpipe?

The downpipe includes the cat. A 200 cell cat is less restrictive. You are talking about a straight through pipe/decat, which is better again but illegal.

You are talking about a straight through pipe/decat, which is better again but illegal.

Is it though? I had a good think about this when I fitted my de-cat and never really came to a conclusion.There is no legal requirement (yet, as far as I was aware) for a car to be fitted with a cat but it's highly unlikely to be under the emissions limits without one.

Be interested if someone knows the official answer :)

The downpipe includes the cat. A 200 cell cat is less restrictive. You are talking about a straight through pipe/decat, which is better again but illegal.

Ok, nice one.

Is it though? I had a good think about this when I fitted my de-cat and never really came to a conclusion.There is no legal requirement (yet, as far as I was aware) for a car to be fitted with a cat but it's highly unlikely to be under the emissions limits without one.

Be interested if someone knows the official answer :)

Yeah, I think emissions are the issue. If you are within limits with a decat then I guess there is no problem.

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There is currently some debate as to whether the removal of a pre-cat would give rise to a MOT failure. The FL tsi has both a pre-cat and a cat, if you go for a sports cat then the pre-cat will be removed as it is restrictive. It is possible that some testers may fail the car due to the removal of the standard pre-cat despite a sports cat still being in place. I guess the question is whether a pre-cat is a cat for the purposes of the MOT Regs, I would have thought not but apparently it isn't clear.

Right then ,,,, while you two bicker ,,,, back to roots!

Just been to the Longlife dealership in Ashford.

Custom built full exhaust, this breaks down as 3" downpipe + 200 cell cat 500 squids.

The Cat back part with polished tailpipes (identical to OEM) is 300 of ya queens squids.

£800 (+ the vodka and Tonic) for a custom built S/S system with lifetime warranty.

Now that ain't bad at all.

Miltek ,,, your taking the hit & miss!

Thanks for the heads-up Rydal0. :thumbup:

Er, yeah, again you're welcome for pointing out Longlife! :dull:

Er, yeah, again you're welcome for pointing out Longlife! :dull:

Sorry mate, missed you out on the Thanks Section. :thumbup:

There is currently some debate as to whether the removal of a pre-cat would give rise to a MOT failure. The FL tsi has both a pre-cat and a cat, if you go for a sports cat then the pre-cat will be removed as it is restrictive. It is possible that some testers may fail the car due to the removal of the standard pre-cat despite a sports cat still being in place. I guess the question is whether a pre-cat is a cat for the purposes of the MOT Regs, I would have thought not but apparently it isn't clear.

The way I understand it is:

The pre-cat is only there to clean up the gasses when the engine is cold, after that it's just impeading the flow.

As an MOT emmision test is done with a 'warm/hot' engine, the pre-cat is not relevant.

  • Author

The potential problem is that if the pre-cat is regarded as a cat and it was present at manufacture but has been removed the car would fail on a visual inspection alone irrespective of the emissions test.

The potential problem is that if the pre-cat is regarded as a cat and it was present at manufacture but has been removed the car would fail on a visual inspection alone irrespective of the emissions test.

You can see the pre-cat? I thought it was in the actual pipe itself?

  • Author

You can, it's just a small bulge in the down pipe. As you would expect I suppose it looks like a mini-cat. The exhaust guy warned me about the new regs and whilst he said he didn't expect it to be too much of a problem he couldn't guarantee it and advised to keep the old system handy just in case it needed to be swapped back for an MOT.

I would expect that if the need for a "visual" check to be done then the solution would be to retain the OE pre-cat "box" but with the ceramic removed and replaced with an internal straight-through pipe.

Sorry mate, missed you out on the Thanks Section. :thumbup:

Cool. B)

The way I see it is that the pre-cat is only there to improve cold start emissions. I dont think it would fail as the pre cats are not mandatory on every car and they dont test for start up emissions. I think as long as a car is fitted with a cat and passes the emissions test then the MOT tester should not fail the car. Looking into the new regs on MOT I think they are more geared towards stopping people fitting decat pipes and HIDs without level adjustment or proper xenon lenses. Basically as its part of the MOT, if you were stopped by the Police then you could be prosecuted or given a VDRS for having a vehicle that is not fit for road use. I really dont see the pre-cat being an issue as it is pre cat and not the main cat.

I am taking my car to BCS Exhausts in Feb and they are using my car to develop the exhaust next month for the Octy VRS. He has given me an idea of how much the exhaust will be to buy but I wont quote it until its officially released by BCS. All I can say is that it will be a lot cheaper than the Milltek! The exhaust will be a full 3inch system front to back.. You have choices of a 100 cel cat, 200 cell cat or a full FIA 100 cel race cat. Once the exhaust is complete and I have more details I will let you all know the details. Given that some of the MK5 boys have the BCS exhausts and rave about them stating they are better than the milltek for fitment, power and noise then it should be interesting to see the end product on my car.:D

Recent MOT changes are more for safety features like warning lights displayed on the "dashboard".

I'm sure that the pre-cat syndrome will be for the "Jobs Worths"!

I'm having the 3" down-pipe with 200 cell cat fitted tomorrow, reducing to the OEM size (2.5") for the rest of the system (in S/S).

The tail pipes (I have requested) to be the same as OEM shape and size, but polished S/S.

Maybe I'll report later.

Anybody need an OEM exhaust system off a "10 reg" vRS Octy?

Looking forward to reviews from both of you ^^

:)

My car is booked in the week commencing the 13th feb, so I should have it back by the friday of that week.:thumbup:

Job done!

Fast Road Conversions had the car for this day, got back to them at 17.15hrs when they were just putting the finishing touches to the rear box tail pipes.

Had a walkabout under the car ,,,, what a piece of engineering/welding.

Tail pipes exactly as requested.

The sound a tick-over was just a burble, on the road with the loud peddle depressed, wheel spin! The sound was not excessive but enough to say "I'm coming passed you".

Overall opinion, excellent.

600 squids saved over a Miltek system.

Happy days. :thumbup:

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