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Engine Specific Info and Questions => TDI Engine -General Info => Topic started by: catlin_cava on October 13, 2010, 02:13:27 pm
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FIRST OFF!!! I don't care about any enviromental complaints I might get. I'm not going to kill the enviroment by myself. ;)
The car is set for 4PM tomorrow to have it removed, like mentioned in previous thread, the car has 420,000kms wiht the Original exhaust, and I find it rather slow at boosting and sluiggish on the highway, so I figured the cat could be plugged up.
in the spring i\m replacing the entire exhaust with a Magnaflow SS exhaust and Techtronic SS DP.
I'm just curious(MINUS THE AIRCARE BS we don't have that here in NB), Is there any problems in removing it. I haven't found any bad info yet, Just people whinning about the enviroment.
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No ,other than my COMPLETE DISAPPROVAL ;D ;D ;D, it will have no effect on removing it. I actually installed one on my 1990 transporter!
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should I just shave the money and wait? or remove it? will it be sootier?
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There is no benefit to leaving it on the car any longer than it takes to remove it.
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Just took mine off not too long ago, I also took the muffler off last year. It sounds mean, especially around 3000 rpm! :D It also boosts alot quicker :) hardly any lag.
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I ran no cat and no muffler for a few 100k buts its too loud. I just upgraded the turbo and went 3inch exhaust. I added a aero xl muffler the car is quieter with bigger exhaust and I love it. It wont be too loud if you delete the cat and leave the muffler.
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Yea I don't want a drone since its a highway car, I had a AAZ with a straight pipe before and it got annoying on long drives,
Will no cat make the exhaust smoke more? If its completely stock
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no it should not smoke more
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What's a cheap way to make smoke lol
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So it cost me $38 to have the cat removed... I called someone and have it sold probably for 40 or 50 dollars lol.
Plus she is a bit louder and a little smokier lol.
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I'm kinda surprised it smokes more. The cat isn't really supposed to be a soot trap, or perhaps the extra flow doesn't jive with what the MAF is telling the ECU i.e. fuelling.
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there is no O2 sensors anywhere near teh Cat, if there was I wouldn't off removed it, plus the cat is plugger up. you can hear the turbo better now.
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I punched my cat out - making it a joy to drive again - was considering a new turbo or even IP but thought to go for the cheapest possible solution and she gets up and scoots now!!! Obviously it was a clogged up cat that was causing too much back pressure!
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To the plugged cat owners, before removal did you notice the propane/stank smell?
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catalytic converters are bad news!!! >:(
nobody ever buy a car from me if its gonna have to pass an emission check!
my GTI gutted its own cat.. that was PRETTY COOL!
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catalytic converters are bad news!!! >:(
Bingo.. I have yet to find an engine that uses MORE fuel and makes LESS power with the cat removed.. Even with all the advancements of late.. Engine design and management as well as maintenance is the key.. Hence why we have modern engines making more power with better economy while still using a wreched cat.. Take the cats off and much like the antiques out there, more power and better economy instead of wasted heat...
(Flame suite on) The old Honda CVCC engine had no need for a cat till the early 80's.. Even then it still met emission level requirements, but cat converters HAD to be installed anyway as per our friends at the government that know best....
Okay done with the off topic rant..
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honda CVCCs had 2 combustion chambers too. the spark plug wasnt actually in the main combustion chamber.
and the carb had 3 barrels. 2 were for running the engine, and the 3rd supplied a very rich mixture to the pre-combustion chamber.
the main mix in the combustion chamber was mixed very lean because of the rich mix in the pre-chamber.
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And most impressively, they worked and worked well.. And like anything else that works, and works well it had to be "improved"
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15,000kms with no cat, car still works good(when it works) ;D See next post for problems :'(
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And most impressively, they worked and worked well.. And like anything else that works, and works well it had to be "improved"
honda actually used that design up untill the current D series engines came out.. even the very first D series engines (were actually still E series, not a true D series) had the cool head with 2 combustion chambers.. basically when honda went away from carburators, they quit using that rich mix to the pre chamber, and lean to the main chamber.. and just went to EFI, and catalytic converters..
if you are good at tuning gas carbs, you can pass emissions with just really RETARDED timing and a lean idle mix..
345 international went from 1800 CO count, to 90 CO count.. (900 being the legal limit where i had the truck)