Johneturbo
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| posted on 2/3/12 at 10:31 AM |
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200 Cell cat for BEC ok for emissions!?
As above, i've come across http://www.magnaflowstainlesssteelexhausts.com/91004-universal-cat-51mm-id.html
as i need a 2" inlet/outlet.
Would a 200 cell get the emissions down for a MOT test?
The one i bought of ebay was a 400 cell but the inlet/outlet were different sizes so sending it back! as without welding it i won't get it to
fit
[Edited on 2/3/12 by Johneturbo]
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mark chandler
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| posted on 2/3/12 at 11:00 AM |
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Hijack on this
My TT was made in 1994, so just catches the emmisions but has the highest limit.
Early CAT's are I am lead to believe quite restrictive so what is the cell density all about, do I want the lowest cell count in a large
container to get the best performance?
Cheers Mark
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Johneturbo
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| posted on 2/3/12 at 11:06 AM |
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Lowest cell count would be better for performance i guess, but how low do you go, there are 100 cell counts available but would it pass emissions :/
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INDY BIRD
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| posted on 2/3/12 at 01:36 PM |
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my blackbird turbo carbed had a 200 cell and passed emmissions in the end ok, 2 attempts though,
i have a 2.5" outlet one though.
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adithorp
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| posted on 2/3/12 at 01:59 PM |
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I passed SVA with a 200cpi cat on my R1.
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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Johneturbo
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| posted on 2/3/12 at 02:03 PM |
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Thats good to know guys 
The more i look into it 200 cell is normal for most cars.
with the engine being injection and being able to mess about via the PC5 i should get it to where it needs to be
I think the critical thing is making sure they are freaking hot for the test
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BobM
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| posted on 3/3/12 at 07:13 AM |
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Pretty sure mine's a 200 cell and I just passed IVA yesterday. Yes, it needs to be very hot - not difficult when you're running it at 3k
rpm for quite a while in the bay!
I found the biggest difficulty was maintaining steady fast idle - the readings on the meter fluctuate around a lot with very minor variations in
throttle. In the end mine was CO 0.03, HC 115 and lambda 1.02. I ended up with the Power Commander set to -27 on the relevant bits of the map.
Not very Locost but very BEC
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