Well some say, that a sport exhaust has no difference on the car's performance. I can say for myself that you can notice it, because sadly when they stole my Remus exhaust 2 years and I had to fit a regular exhaust, you could feel the difference especially in aceleration times. So yes, I think it's safe to say that a sport exhaust can make a difference. Whether it's noticeable to you or not, that's a different story.
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