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Trust Power Extreme II's have 3in piping, sit close to the chassis, and come in at about 92dB @ 4800rpm (apparently). They're available at Autobarn for 900ish, or also from SAU trader BT-Revolution here: http://www.skylinesaustralia.com/forums/sh...ead.php?t=75916

So doesn't that mean 3" cat back Trust PEII is illegal?

I thought the test was for 90db@4000rpm. can anyone confirm this?

PSI_GTSII, with your jasma exhuast is it 3" cat back?

thanks

Michael

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