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okay i'm changing my exhaust set up. is having a 2.25" straight pipe to an rsx-s muffler gonna still be quiet? not sure how many people have done this. thoughts??

 
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isnt straight pipe loud? i dont know just wondering

 
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yeah i wanted to know if it would be on a stock type muffler. i know the rsr is straight pipe.

 
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it wont be crazy loud, but loud enough to hear it at high revs. one great reason why it will be loud is because there will be no resonator (since you doing straight pipes).

i say do the rsx muffler and 2.25" straight pipe, it wont be THAT loud. and plus, it'd look sex

 
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nice. i'm planning to get the 05 rsx-s muffler. it's exactly like the DC5 ITR one with the valve in it.

 
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It doesn't matter how straight the pipe is, the sound is reduced by the resonator and the muffler. The stock Type S exhaust is quiet by itself because it is an exhaust that must comply with OEM regulations. By removing the resonator and leaving the muffler alone, it decrease the amount of noise reduction. Most aftermarket exhaust systems use bullet type resonator which are not very big compared to the stock resonator, also their mufflers are smaller compared to the stock RSX unit. The RSX muffler is bigger than the civic muffler, so the sound of it without a resonator might be comparable to the sound of an aftermarket unit. I have a RSX Type S exhaust in my civic, but still have the resonator and the sound is as quiet as stock. You can try it and if you don't like it you can add a small bullet type resonator to help reduce some noise.

 
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i was using the hp 4-1 header with a highflow cat 2.25 to the stock ex muffler, power, not loud at all

 
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^ liar!

 
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i never meant literally straight i just meant without a resonator.

 
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Well, I have seen setups in which the pipe is fully straight up to the rear axle the bends slightly towards the side on the car. Like modded R-34 Skylines.

 
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just do it dennis, it will sound nice