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<blockquote data-quote="ZeNeGeR" data-source="post: 101510" data-attributes="member: 929"><p>THERE IS GUY FROM USA TELL ME HOW HE DO HIS exhaust system he drive a 328 </p><p></p><p>Originally Posted by 93nitemare</p><p>Quote:</p><p>Originally Posted by ZeNeGeR</p><p>hey there,</p><p></p><p>i have read that u done ur exhaust to 2 1/2 inch ? u mean urs is 6-2-1 ? i thinking of changing exhaust system to single piping instaead of twin (stock)</p><p></p><p>how i modify it ? change to stainless steel piping ? wat mid box u using ? cath converter? and there is o2 sensor down there wat to do with all that ? pls advise thanks </p><p></p><p></p><p>here is my whole setup: </p><p></p><p>-obd2 tubular headers from 96-2000. they are same on 328's and m3's from them years. i home ported out the inside also. </p><p></p><p>-where the 2 seperate headers come down and bolt into the downpipes they "y" together for the o2 sensor. right where they "y" together it 's about a 2 1/2" diameter there. so i had the muffler shop cut the exhaust right there and weld in a single 2 1/2" pipe the whole way back.</p><p></p><p>-i had them relocate the 02 sensor like 1/2 foot back from the original location.</p><p></p><p>-i also put in a resonator to it didn't make the car sound like a jap ricey car!</p><p></p><p>-i have no catalytic converters at all. just one single resonator</p><p></p><p>-for the muffler i put in a flowmaster delta flow 40 series</p><p></p><p>-then coming out of the flowmaster i had them install a single inlet dual outlet chrome angled cut tip</p><p></p><p>the thing sounds awesome and runs soooooo much better on the top end! from 4000rpm and up it pulls a lot better. you loose some torque down low from the reduced backpressure but gain it back on the top end. and if you get cams and a good flowing intake this exhaust setup will work hand in hand with it!</p><p></p><p>it's a ton cheaper too! the headers cost me $100 used shipped to me. plus the header gaskets cost $50. the whole single 2 1/2" setup cost me $200 from a muffler shop. that included the resonator, flowmaster muffler, chrome tip, and labor. all total i have a complete badass exhaust for under $400 american dollars!</p></blockquote><p></p>
[QUOTE="ZeNeGeR, post: 101510, member: 929"] THERE IS GUY FROM USA TELL ME HOW HE DO HIS exhaust system he drive a 328 Originally Posted by 93nitemare Quote: Originally Posted by ZeNeGeR hey there, i have read that u done ur exhaust to 2 1/2 inch ? u mean urs is 6-2-1 ? i thinking of changing exhaust system to single piping instaead of twin (stock) how i modify it ? change to stainless steel piping ? wat mid box u using ? cath converter? and there is o2 sensor down there wat to do with all that ? pls advise thanks here is my whole setup: -obd2 tubular headers from 96-2000. they are same on 328's and m3's from them years. i home ported out the inside also. -where the 2 seperate headers come down and bolt into the downpipes they "y" together for the o2 sensor. right where they "y" together it 's about a 2 1/2" diameter there. so i had the muffler shop cut the exhaust right there and weld in a single 2 1/2" pipe the whole way back. -i had them relocate the 02 sensor like 1/2 foot back from the original location. -i also put in a resonator to it didn't make the car sound like a jap ricey car! -i have no catalytic converters at all. just one single resonator -for the muffler i put in a flowmaster delta flow 40 series -then coming out of the flowmaster i had them install a single inlet dual outlet chrome angled cut tip the thing sounds awesome and runs soooooo much better on the top end! from 4000rpm and up it pulls a lot better. you loose some torque down low from the reduced backpressure but gain it back on the top end. and if you get cams and a good flowing intake this exhaust setup will work hand in hand with it! it's a ton cheaper too! the headers cost me $100 used shipped to me. plus the header gaskets cost $50. the whole single 2 1/2" setup cost me $200 from a muffler shop. that included the resonator, flowmaster muffler, chrome tip, and labor. all total i have a complete badass exhaust for under $400 american dollars! [/QUOTE]
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