VQ Hiss or other rattle?

SG4247

Dude that hiss BS was no good on cheap test pipes.

I drove to the end of the street after install and drove back to the shop and took that **** off. I couldn’t stand it.

I bought used ART pipes of FB market place for the Z1 DE header. I also had VQ ART pipes on the factory VQ header and it sounded killer.

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NA on E85 - 12.402 @ 112 mph
100 shot E85 - 11.589 @ 117 mph
JWT C2 cams rev Base Circle & Titan Valves

Averying

I wonder if the noise is a product of lower quality test pipe (thin wall tube?) or simply due to the straight though non-catted design. Seems like it’s noticeable on resonated test pipes and HFC too


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2009 Sport Touring | Platinum Graphite | GTM Stage 1 Supercharger | BC BR Coilovers | Hotchkis Swaybar | Z1 FUCAs | AME TM-02 Wheels | Z1 2-piece Front Rotors | Z1 Clutch & Flywheel | Invidia Gemini Catback | GTM Resonated Test Pipes