S3 saloon engine rattling at 110mph

[S333LTN]

My s3 saloon has been been rattling every time.i hit 110mph i thoigh it was miss shaped rims but had those fixed and ots still there any ideas. Every time i get to thay 110mph mark. I have scorpion down pipe, airtec intercooler amd stage 2 map

 

[Audi_Ambassador]

Is it rattling or shaking? Rattling is a sound, shaking is a feeling. Is it only while on the brakes or just whenever over 110?


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