hi people! what do you think, bring ma what if I put the kat out with my ep3 and nn 4-1 curved? since I don’t think I lose the torque of under with the invidia I have to try something else, it seems normal with the catbacks of invidia, and rather inconspicuously as possible….so I bought the kat atrappe at ebay( original hosenrohr cut open and kat weg)