Quote:
Originally Posted by Gtfour
I have CSL headers, I fabricated a custom catless S pipe out of a E46 M3 section 1, OEM X-pipe and OEM mufflers.
It's not really loud, no drone but it's rasp festival. I kinda like it. The only thing with a catless car : it smells!! You can't stay in traffic with windows open. I think I will put OEM S pipe back on the car with my BMS X-pipe.
If you want to do a custom S -Pipe with no rasp, you can buy Aero Turbine resonator AR-20 or AR-25. A lot of guys use them on E46 M3.
http://www.custom-performance.net/pr...idCategory=253
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How do you know which size to get? I checked the m3 forum and some used the ar20 others the ar25. The difference being 2 inch v. 2.5 inch.
I can do this one of two ways, have a whole pipe fabbed, or just cutout the cat and replace it with resonator. Any suggestions?