Hi all,
First post here

I have had a quick scout around on the search bar, but came up empty.
I have installed a cold air induction kit on my Golf 1.8T GTI the 150Bhp model, now it drives great BUT its not as happy at idle as it used to be and I am not a complete noob with cars (used to be a mini nut

)
MAP sensor removed and refitted no issues there, all tubes checked for leaks etc no issues there either.
Now when I used to fit induction kits I know they dont sound as smooth on idle as a stock filter would, but surely not shuddery like this.
Any ideas?
Thanks in advance!