Greddy Turbo Ti-C with Invidia Test Pipe~ Should I remove my TP?

Andy124

I think maybe the Greddy Ti-c exhaust too high flow and made my Z lost in power? Im worry if i change an aftermarket exhaust manifold will make my Z even worse.

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|Amuse|Stillen G3 CAI|Stillen Pulley|Greddy Turbo Ti-C|Invidia Test Pipe|Swift Spring|Ichiba 20mm/25mm|JDM Style Clear Tail lights|Michellin PSS|

edub370

There's no possible way u lost hp. u may have lost low end torque, which is tricking your butt dyno, but i garuntee that u gained power up top. unless u went much larger than 60mm, u probably didn't lose i gigantic amount of tq down low either

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Andy124

My piping was 70mm. This is why I hard to choose whether to continue using the Test Pipe then go for a tune or replace back OEM Cats. Any suggestion guys?

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|Amuse|Stillen G3 CAI|Stillen Pulley|Greddy Turbo Ti-C|Invidia Test Pipe|Swift Spring|Ichiba 20mm/25mm|JDM Style Clear Tail lights|Michellin PSS|