Knocking sound 3" downpipe

[Gordie_S3]

Just finished up bolting up my 3" relentless downpipe, and now all of sudden a annoying knocking sound has appeared when I take off/ accelerate / full lock etc.

I checked cv joints are okay, checked sub frame bolts and engine mounts...all good :/

Any suggestions guys?

 

[Westy]

I'd guess the DP is hitting something when the engine is rocking under acceleration/braking.

 

[James TQ]

thread on here, new engine mounts should stop it, i have the same knock and will be replacing mine soon