Right I have a urs4 advant that's just a bit too loud. It's 400+ HP so the stock exhaust was becoming a bottleneck and has been replaced. I had a 3 inch down pipe with no cats feeding into the stock system. The car was quiet, but I felt power was restricted. I fitted a home modified aftermatket stainless bi turbo s4 mid and back section which is a twin 2.5 inch system with 2 boxes. I even added a central resonator, but still its loud. The car does pull harder and I no I could advance the timing a little now and egt is lower.
The car is only loud from about 2.5 to 3 k rpm. Other rpms are nice and quiet, but I can't stick the drone on the motorway. So if you have a quiet system for road use can you please describe it. I'm prepared to mod my system or even make custom boxes, but I want some feedback of peoples experiance. Cheers des.
The car is only loud from about 2.5 to 3 k rpm. Other rpms are nice and quiet, but I can't stick the drone on the motorway. So if you have a quiet system for road use can you please describe it. I'm prepared to mod my system or even make custom boxes, but I want some feedback of peoples experiance. Cheers des.
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