Downpipe NVH

pwp25si

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Hello si family. Im currently tuned on phearable 1.5r with minimal mods. How much louder is the si with catted downpipe? I currently have 27won front pipe,but plan to keep the stock exhaust.
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LyonIV

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These guys put a tsp downpipe and prl front pipe with the stock exhaust. It sounds very good to me and I will probably do the same.



Sound clip is towards the end. Did you notice a sound difference with just the 27won front pipe?
 
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pwp25si

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I cant really trust youtube video clips lol.
I dont want my car much louder than it is, but the downpipe is one of the few mods that actually net gains. The front pipe actually made the car less raspy and deeper sounding. It seemed quieter at first, but i quite like it.
These guys put a tsp downpipe and prl front pipe with the stock exhaust. It sounds very good to me and I will probably do the same.



Sound clip is towards the end. Did you notice a sound difference with just the 27won front pipe?
 

LyonIV

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I cant really trust youtube video clips lol.
I dont want my car much louder than it is, but the downpipe is one of the few mods that actually net gains. The front pipe actually made the car less raspy and deeper sounding. It seemed quieter at first, but i quite like it.
Gotcha, the TSP or RV6 downpipes would be the "quietest" you could get.
 

Two Step Performance

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A catted DP upgrade paired with the factory "catback" would yield a modest increase in sound, no annoying tones such a rasp, drone, etc. It's a great option for someone that wants to avoid any significant loudness.
 


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pwp25si

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Hows your downpipe different from rv6 offering? I bought the prl hvdp for 10th gen and it was as usual, top prl quality.
A catted DP upgrade paired with the factory "catback" would yield a modest increase in sound, no annoying tones such a rasp, drone, etc. It's a great option for someone that wants to avoid any significant loudness.
 

Two Step Performance

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Hows your downpipe different from rv6 offering? I bought the prl hvdp for 10th gen and it was as usual, top prl quality.
The RV6 downpipe is newer to market and uses a mostly similar GESI converter. Our GESI converter is custom built for Honda turbo applications while theirs is an off the shelf variant. However, there have not been any issues with what they are using, it is solid all around and I have nothing bad to say about it. RV6 does great work!
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