Which one is the most silent when cruising?
I want the most silent without sacrifying to much hp
Will both be fine with about 550 whp?
Thanks

 

FYI we no longer offer a 996 Turbo stage 2 quiet. We offer just one version sport exhaust for the 996 Turbo but it sounds just as quiet while cruising.

No drone even with K24 turbochargers. Backpressure is 50% compared to stock (0.18 Bar versus 0.36 Bar) Sounds like a Porsche, not like some loud car.

 

less weight with speed tech exhaust....

 

What max hp do you feel it is ok with before it becomes a major restriction?
Thanks

 

I have the SpeedTech 3.0X and love it.

 

bsh, Our 2.5 systems with 100cpi cats perform very well at 700HP and certainly do not cause a major restriction at your power level. At that power level, with a SpeedTech system, it is best to choose the model based on sound preference, not pipe size for performance. I have driven the 2.5 and 3.0 systems back to back and it is not possible to discern any difference during driving or WOT acceleration. The biggest difference is sound level and the difference from 2.5 to 3.0 is very notable. Our 2.5 quiet is as comfortable and quiet as it gets for an aftermarket 996TT exhaust. It will increase your HP, improve the throttle response and add to the overall pleasure of operating your vehicle. You can view our testimonials page for substantial feedback on this system - there are several comments from forum members published.

 

Have speedtech 2.5 and i'm very happy, very nice sound, porsche engine sound .... No drone, i really like it and would not replace it with anything else

I'm set with my exhaust setup, it's not noisy, its sound

 

Thanks for the replys guys.