I am planning on getting an exhaust welded up for my 325is and have a few questions. Are there issues with going from the stock exhaust to a stainless steel y pipe. From what I've been told there are problems when welding straight from aluminized steel to stainless. Is the stock exhaust even aluminized? My plan is to go 2.5" to a highflow cat then to a magnaflow 14815. I am curious as to how bad the drone will be with this setup. Should I also have a resonator welded in?
Thanks for your input,
Ryan
Thanks for your input,
Ryan