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It's not actually a cat, it's a particle collector
the simple answer is no rip it off , loose the EGR , and appreciate the more low down pull it will give you.
Did not notice any difference though.
its not a CAT, its a particulate filter
Used a good kit from Cheviot4x4. http://www.cheviot4x4.com/shop/Vehicles/Discovery/Cat/Performance/Product/300%20Tdi%20EGR%20Blanking%20Kit/
as i was told by rookingham landrovers when i inquired about mine on a m plate the vehicles were type approved with out them they are not required for the mot they only fit them as a after thought for various emission laws in different areas
cars up to august 95 can without cat but must be able to pass an emissions test. after then they must be on there. if u don't believe me check with the m.o.t guy at the garage
Quote from: freeagent on January 03, 2008, 22:09:11its not a CAT, its a particulate filterSigh, what do I know eh?............Look at the parts list or the manual and it'll tell you clear as day its a cat. Look on nay of the exhaust suppliers lists - again, its a cat. The main reason for the confusion is the lack of Lambda sensor - its not needed on a diesel as theres no method of altering the ignition map as a result of the feed-back from the sensor - hence the EGR as its the only way to clean things up effectively - its there to cut down on the particulates (and NOx) the the cat cant deal with as thats not its job - if it was a particulate filter there'd be no need for EGR........But, like I said, what do I know, I've only been fixing the things for 20 years and Mot'ing them for 15............
Do I need a catalytic converter in my 95 300TDi for the MOT??The current cat is fine bit the wire mesh on the flexi joint has burst open and looks a real mess. I'm assuming it will fail because of this joint. :lol:
yep, you are correct it is a particulate filter, not a cat, but the guy on here who's been MOTing them for 15 years insists its a cat, and I couldn't be bothered to argue...
For compression ignition (i.e., Diesel) engines, the most commonly used catalytic converter is the diesel oxidation catalyst. The catalyst uses excess O2 (oxygen) in the exhaust gas stream to oxidize CO (Carbon Monoxide) to CO2 (Carbon Dioxide) and HC (hydrocarbons) to H2O (water) and CO2. These converters often reach 90% effectiveness, virtually eliminating diesel odor and helping to reduce visible particulates (soot), however they are incapable of reducing NOx as chemical reactions always occur in the simplest possible way, and the existing O2 in the exhaust gas stream would react first.To reduce NOx on a compression ignition engine it is necessary to change the exhaust gas - two main technologies are used for this - selective catalytic reduction (SCR) and NOx (NOx) traps (or NOx Adsorbers).Another issue for diesel engines is particulate (soot). This can be controlled by a soot trap or diesel particulate filter (DPF), as catalytic converters are unable to affect elemental carbon (however they will remove up to 90% of the soluble organic fraction). A clogging soot filter creates a lot of back pressure decreasing engine performance. However, once clogged, the filter goes through a regeneration cycle where diesel fuel is injected directly into the exhaust stream and the soot is burned off. After the soot has been burned off the regeneration cycle stops and injection of diesel fuel stops. This regeneration cycle should not affect performance of the engine.All major diesel engine manufacturers in the USA (Ford, Caterpillar, Cummins, Volvo, MMC) starting January 1, 2007 are required to have a catalytic converter and a soot filter inline, as per new EPA legislation. http://www.epa.gov/otaq/highway-diesel/regs/2007-heavy-duty-highway.htm
