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Hey forum just wanted to know if turbo size affects exhaust note. Have a turbo back system on my car and the exhaust note didn't really change got just a little deeper but basically remained the same. Its 3" front/dump and decat pipe and from the decat pipe to muffler 3.5" apexi n1 cat back then a 4.5 inch cannon at the back. I was thinking this would be extremely loud but its just as quiet as the stock muffler just a little bit deeper. Its all tied in to the stock turbo tho thats why I asked if turbo size affects exhaust note. All and any advice is greatly appreciated.

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The Resonator on your Apexi N1 cat-back will have an affect on the noise level of your exhaust, I'm not sure where you are if its legal or not but if you want the car to be loud then you'll need a split dump with a screamer pipe outlet and customise the cat-back so it has no resonators.

If your Apexi N1 exhaust is quiet as stock but deeper sounding then I'd leave it, most people try to find that and never acheive it.

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The Resonator on your Apexi N1 cat-back will have an affect on the noise level of your exhaust, I'm not sure where you are if its legal or not but if you want the car to be loud then you'll need a split dump with a screamer pipe outlet and customise the cat-back so it has no resonators.

If your Apexi N1 exhaust is quiet as stock but deeper sounding then I'd leave it, most people try to find that and never acheive it.

No I love how it sounds just was wondering as I thought it would be much louder. I will soon have another turbo to install and was just thinking if the exhaust note would follow the same pattern. I have a split front/dump with a screamer and when the wastegate opens, "DAMN!!!!" but during normal driving and acceleration the note is excellent just a little bit deeper than stock will try to get a sound clip for you.

Ohh I live in the Bahamas by the way. :nyaanyaa:

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Turbos in a way are a muffler aswell. N/A's of the same motor are heaps louder

^ Yup. Anything that stands in the way of the gas flow (and the sound waves that move through it) will dampen the sound. A I6 M3 with a big zhaust is ear splitting.

Replace the second muffler with a resonator, and keep the $ for the fines

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