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The BMW Range
3 Series
Removing the catalyst from the exhaust system
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<blockquote data-quote="acschnitzer" data-source="post: 142409" data-attributes="member: 2466"><p>Hi bro,</p><p></p><p>I had mine removed just 2 days ago, had to remove it beacuse rattling sounds were already coming out of it. After removal, apparently, i had much better response from the car but the noise level went up quite abit especially when i am using a AA exhaust system...One other thing that i din like was when i engage sports mode, the gears dun seem to change, it will just remain at low gears and pull high revs all the way until i have the sports mode dis-engaged before it changes gears. The sifus here, why does this happen? Does the removal of the cat converters alter the program for the gearbox emu?</p></blockquote><p></p>
[QUOTE="acschnitzer, post: 142409, member: 2466"] Hi bro, I had mine removed just 2 days ago, had to remove it beacuse rattling sounds were already coming out of it. After removal, apparently, i had much better response from the car but the noise level went up quite abit especially when i am using a AA exhaust system...One other thing that i din like was when i engage sports mode, the gears dun seem to change, it will just remain at low gears and pull high revs all the way until i have the sports mode dis-engaged before it changes gears. The sifus here, why does this happen? Does the removal of the cat converters alter the program for the gearbox emu? [/QUOTE]
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Removing the catalyst from the exhaust system
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