Downpipe noise

[techandtest]

Hi everyone, yesterday i got my downpipe installed and so far so good, i deleted the resonator previously on stock exhaust andright now the downpipe is fed into oem exhaust.
Its billyboat catted downpipe.
Now , for those of you who installed downpipes on this car, is it normal to hear it idle loud standing next to the driver side door?
It seems to me its leaking but when i looked at the clamps the pipes are inserted properly. Before i take it to the shop i wanted to ask your experience with aftermarket downpipes.

Thanks in advance.

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[mroberte]

What do you mean by idle loud? Mine isn't that loud at idle, but is this when you do a cold start?

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[techandtest]

Sorry by loud i meant that the sound you usually hear standing behind the muffler tips is coming when you stand next to the driver/passenger door

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[mroberte]

Oh that's not normal, prob exhaust leak at one of the connections.

Kinda can hear sound at sound on cold start up: https://youtu.be/Qv2ddwgbFtQ

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[techandtest]

Yeah, how this video sounds when hes behind the muffler is how mine sounds when im by my door

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[mroberte]

Yeah, how this video sounds when hes behind the muffler is how mine sounds when im by my door

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Def exhaust leak at the dp and exhaust connection then.

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[techandtest]

Ughh these amateurs

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[techandtest]

How about vibration. Did you guys notice more vibration on drivers seat?

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[techandtest]

Mostly during idle

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[INYAUDI]

My bros '15 GLI which I'm pretty sure is downpiped w/ stock catback makes the exhaust sound by the door as well. I bet you can feel the heat on your ankles from the gases leaking.

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[techandtest]

Thank inyaudi
i think that sound is due to the flex pipe which happens to be right by that area. How about seat vibration higher than stock levels during idle. Anyone witnessing that?

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[INYAUDI]

Thank inyaudi
i think that sound is due to the flex pipe which happens to be right by that area. How about seat vibration higher than stock levels during idle. Anyone witnessing that?

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I'll test that out for you. I have the means to experience stock vs your exact scenario, literally seconds apart so why not.

[techandtest]

I'll test that out for you. I have the means to experience stock vs your exact scenario, literally seconds apart so why not.

Thanks you are awesome

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[techandtest]

Def exhaust leak at the dp and exhaust connection then.

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Oh that's not normal, prob exhaust leak at one of the connections.

Kinda can hear sound at sound on cold start up: https://youtu.be/Qv2ddwgbFtQ

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Thanks for your input as well :)

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[techandtest]

Cmon peeps with downpipes

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[INYAUDI]

Btw I didnt notice any big differences. Then again my ride is not stock at all when it comes to suspension vs the downpiped car

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[techandtest]

I think its dp hitting the heatshield causing light noise ans vibration

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[HurrayFive]

I have had that same B&B catted downpipe for over a year now and standing next to the driver or passenger door sounds nothing like standing at the muffler, the rear is substantially more throaty and burbly that it was stock, but only there. Sounds like a leaking or mis-sized connector mating to the stock exhaust.

FWIW, I was one of the first folks to have that downpipe installed on an 8V S3 and B&B's fabrication shop is right up the street from my house. When my tuning shop was installing the DP, the slip-fit mating connector that B&B included did not fit the S3's stock exhaust. My tuning shop said they could stretch it on their machine and hammer it on but were afraid it would leak. B&B ended up driving over to my shop with a new larger connector, and said they updated the connector for all future systems based on that feedback. Might have gotten an old kit that still had the old connector? Totally a guess though, might not be that connector at all.

[techandtest]

Thanks that helps a lot

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[techandtest]

Fixed...clamp bolt was rubbing on heatshield. Thank you all for helping. Side note, during cold start you guys smell gas more than before?

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[mroberte]

Glad you were able to get it fixed and easily. Now enjoy, mine still puts a smile on my face every time I stomp on the gas.

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[techandtest]

Still dealing with the CEL after installing a spacer, wonder if i need a larger spacer :/ thoughts?

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[MagnaFlow]

Fixed...clamp bolt was rubbing on heatshield. Thank you all for helping. Side note, during cold start you guys smell gas more than before?

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Yes, that is considered normal for a car without catalytic converters.

[techandtest]

Yes, that is considered normal for a car without catalytic converters.

I see. Even though it comes with a magnaflow high flow cat in it?

Also any suggestions on CEL? Will using an additional spacer help since i already have an elbow spacer?

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