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(Post Link) post #1 of 4 Old 09-06-10 Thread Starter
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156 cat bypass pipe

Iv just brought and fitted a cat bypass pipe to my 156 2.0 selespeed (2000 model). The car sounds amazing and there is a performace increase.
I replaced the old cat as it completely failed and couldnt get the car to move, so thought now was a good time to try the bypass, got it of ebay brand new with a a built in muffler to keep it somewhere respectable

Does anyone know if it would have any downside other than the MOT issue, 'cause at the moment i cant see any and it really does move well now.
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Every mile you drive, you kill a baby bird with your emissions. Just enjoy driving it and don't worry. For MOT, you might even pass emissions. Just get a friendly place to measure now and see. If not, cheap CATS can be bought from BUYCATSBY.
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No no, it's a baby fur seal that gets killed!

Seriously, emissions are a complicated business.
Without a cat, you'll have decreased your CO2 emissions. That's right - catalytic convertors produce MORE CO2. So, what you've done is better for the planet (less global warming, now called 'climate change' after many countries had their coldest winter in 60 years). Now for every mile you drive, one island nation is slightly less flooded by rising sea levels.

However, your nitrous oxides emissions have increased. So now there's more acid rain falling in Sweden for every mile you drive, and another tree dies, meaning the loss of habitat for the <insert name of local woodpecker> and decreased absorption of CO2.

But, the engine runs better and uses less fuel due to the greater efficiency. So there's less unburned hydrocarbons, and less carcinogenic benzene in the air where you drive...


'00 GTV V6, '08 FIAT 500, shell and parts for a '71 FIAT 850 Coupe
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(Post Link) post #4 of 4 Old 11-06-10 Thread Starter
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LOL Thats what i thought....and hopefully that bird that had a poo down the side of the car this morning is next on the list to be had my new found weapon against the enviroment

But seriously the car sounds fantastic now...and like Alex said the fuel is ever so slightly better, which is nice for the selespeed
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