4 ROUSH
NONE
No problem on cold start. Idle is not an issue. When you get on them , they are sweet. No drone what so ever. They are much louder than the Ford Racing/Borla sport. I have listened to them both. The Sport is similar to Borla Stinger almost. It is a sweet system as well. I have Ataks on my 2014 GT/CS as well.How bad is the cold start with the atak? And how loud is it at idle?I was thinking of going this route in a year when Its not my DD.

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