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The BMW Range
3 Series
E46
oppinion on Quad exzos
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<blockquote data-quote="wan syahmi" data-source="post: 317130" data-attributes="member: 15222"><p>quad exhaust, no problem when u install after muffler...but not very nice looking..same performance.. no engine fault...for the catalytic converter, 6 cylinder has 4 cats, 2 in front and 2 behind o2 sensor, if u remove cats behind, the powe will increase about 5hp, no problem for dme. but if u remove cats infront, the power and tork much different,, but sometime ur check engine lamp will light. to settle this, both of the o2 sensor u must ( alihkan ke belakang satu kaki setengah) . it just to reduce the heat for o2 sensor.</p></blockquote><p></p>
[QUOTE="wan syahmi, post: 317130, member: 15222"] quad exhaust, no problem when u install after muffler...but not very nice looking..same performance.. no engine fault...for the catalytic converter, 6 cylinder has 4 cats, 2 in front and 2 behind o2 sensor, if u remove cats behind, the powe will increase about 5hp, no problem for dme. but if u remove cats infront, the power and tork much different,, but sometime ur check engine lamp will light. to settle this, both of the o2 sensor u must ( alihkan ke belakang satu kaki setengah) . it just to reduce the heat for o2 sensor. [/QUOTE]
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oppinion on Quad exzos
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