General E30 related discussions -
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calpol
- E30 Zone Newbie

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Sun Aug 16, 2009 11:44 pm
Does anyone know where i can get a decat for my 320i touring???
cheers
cal
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TPS
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Mon Aug 17, 2009 7:22 pm
Decat?What you want to get rid of the Cat?

1991 325i Touring Alpine White II
1994 318i Touring Sterling Silver
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StuBeeDoo
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Mon Aug 17, 2009 7:32 pm
I could be wrong, but AFAIK all UK spec. 320i tourings came de-catted as standard. Production ended April '91 and cats weren't necessary until '92.
The front silencer looks like a cat, though.
This is why I no longer drive an E30......

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calpol
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Mon Aug 17, 2009 7:32 pm
apparently it has according to carfolio.com havnt had a look underneath yet though wanna make it sound a bit better
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calpol
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Mon Aug 17, 2009 7:34 pm
StuBeeDoo wrote:I could be wrong, but AFAIK all UK spec. 320i tourings came de-catted as standard. Production ended April '91 and cats weren't necessary until '92.
The front silencer looks like a cat, though.
ok so is there anyway of replacing the front silencer?
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StuBeeDoo
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Mon Aug 17, 2009 7:34 pm
calpol wrote:apparently it has according to carfolio.com havnt had a look underneath yet though wanna make it sound a bit better
They're probably making an assumption on BMW's description "cat prepared".
This is why I no longer drive an E30......

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StuBeeDoo
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Mon Aug 17, 2009 7:37 pm
calpol wrote:ok so is there anyway of replacing the front silencer?
Are you wanting to make your car more noisey?
BMW silencers are known for being efficient from a flow point of view. If you want to lose the silencer in a search for power, you're wasting your time.
This is why I no longer drive an E30......

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StuBeeDoo
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Mon Aug 17, 2009 7:40 pm
calpol wrote:well it says catalytic convertor: Yes
OK, if you look under the bonnet or under the car, can you see a lambda sensor anywhere in the front pipes?
No sensor, no catalyst.
This is why I no longer drive an E30......

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calpol
- E30 Zone Newbie

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Mon Aug 17, 2009 7:43 pm
StuBeeDoo wrote:calpol wrote:ok so is there anyway of replacing the front silencer?
Are you wanting to make your car more noisey?
BMW silencers are known for being efficient from a flow point of view. If you want to lose the silencer in a search for power, you're wasting your time.
wanting more noise for now will worry about power when i put the 2.5 in it
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StuBeeDoo
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Mon Aug 17, 2009 7:44 pm
StuBeeDoo wrote:calpol wrote:well it says catalytic convertor: Yes
OK, if you look under the bonnet or under the car, can you see a lambda sensor anywhere in the front pipes?
No sensor, no catalyst.
Failing that, go to your local BMW dealer, tell them the last 7 characters of the VIN code (chassis number) and ask them for a "vehicle specification enquiry" print-out. That will tell you exactly how the car came from the factory.
Mine says 200 * Delete Catalysor
200 is the factory option code.
This is why I no longer drive an E30......

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TPS
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Mon Aug 17, 2009 7:46 pm
Providing your 320I doesn't have to have one by law, then you can just put a middle box instead of a CAT, My '91 Touring has a CAT, but its not an MOT requirement

1991 325i Touring Alpine White II
1994 318i Touring Sterling Silver
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Sweety
- E30 Zone Newbie

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Tue Jul 20, 2010 9:08 pm
StuBeeDoo wrote:I could be wrong, but AFAIK all UK spec. 320i tourings came de-catted as standard. Production ended April '91 and cats weren't necessary until '92.
The front silencer looks like a cat, though.
Does that mean my 318IS has 3 silencers then?
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Sweety
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Wed Jul 21, 2010 12:24 pm
Yes, they aren't very good silencers then, car sounds the nuts with a standard system
