[neo_]

I have had my aftermarket downpipes on for about a month now. As soon as I installed them and turned on the car, there was a loud metal rattle.

Sounds like the infamous wastegate rattle. The thing is my car never made this sound with the stock downpipes. I can only assume that the stock downpipes do a good job of muffling out the sound somehow.

I obviously want it fixed, but I doubt the dealer will perform warranty work on my turbos with aftermarket downpipes. So I guess I will need to put my stock downpipes back on, but I am worried that the wastegate rattle sound will again be muffled and unheard with the stock downpipes

Has anyone else been in this situation or have any insight?

[Autobot]

I had somethign like this when I got rid of my secondary cats, but it just turned out to be that the pipes attaching to the headers were loose. I tightened the bolts up and I have not had an issue with it anymore

[rooster3.0]

Check the install first. Dps have been known to enhance wastegate rattle. Do you have a tune?

[neo_]

Originally Posted by rooster3.0

Check the install first. Dps have been known to enhance wastegate rattle. Do you have a tune?

I am almost certain it is the downpipes, because when I first turn on the car the sound is very distinct and loud. But then slightly quiets down. I figure if it was something with the install the sound would be constant.

And nope, no tune.

[Alex@AKMotorwerk]

it's not a wastegate rattle... most likely the Dp's are either...

A- touching each other and need to be adjusted

B- bolts on dp's are not tight enough

C- DP's are touching heat shield on passenger side (very common)

Hope that helps u out