Originally posted by nando
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its absolutely ridiculous feeling to do WOT at 140mph+ with euro s54 catless headers + OEM usa e46m catless 60mm twin pipes. just mid pipes 1+2, the noise is fantastic, straight engine noise. to sneak by track DB regulations have a J pipe set in the mufler placement made with supertrapps. otherwise a 4 pack of resonators with a X pipe merge should make it pretty gnarly sounding, boxxer engines sound fantastic with those kind of setups ( 2 resonators, no muffler)
Just run no muffler if flow is of concern!!! the OEM e46m muffler is a ridiculous item.
Here is a quiet street s54 with euro headers+ S54 OEM midpipe section 1+2 and single muffler (OEM e36M) sounds like this; just imagine sitting in your e30 with this background noise. I am, hopefully soon!!!
Single muffler from e36M fits and sounds closer to any true e30 single muffler with 2 pipes in/out than a E46m 4 tip muffler.
if you want to run midpipes only (mufflerless) the max volume of sound from exhaust can be achieved. Tachometer was not calibrated in the DTA in this video, it was the first start up vid I took. Please excuse the "400 rpm" idle and incorrect tacho.
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