UK-POLOS.NET - THE VW Polo Forum

Right no relavance to polos. got a m8 who got a vw golf mk4 1.9tdi. sounds amazing with straight throught pipe. lol i sad
thing is he said it has like butterflys in the exhaust. what he mean. i cant describe but it sounds like this
https://www.youtube*.com/watch?v=A8hngxNOss8
is it just a straight throught pipe or has he got summart else to make that sound. he doesnt let much away with his ideas

cheers
tom

to me it sounds like some sort of dump valve, BOV (blow off valve)
does sound a bit odd tht one in particular, maybe its a small or subtle one and the straight through exhaust is enhancing it

my theory anyway

hmmm not sure. love diesel with straight throught . in my eyes sound mint. maby i sad lol

tom