This is a pair of high flow cats for the Nissan VQ engine from Beek Technology. Used for two days only! Selling because it was too loud for old me, but it’s definitely quieter than straight pipes. Maybe I was too old for it… I had it on a Q60 3.7 Coupe. It does NOT need tuning, and NO check engine light. That’s the advantage of Berks. Per the product description, it fits the following cars: 2007-2008 Infiniti G35 Sedan (VQ35HR) 2007-2008 Nissan 350Z Coupe/Convertible (VQ35HR) 2008-2013 Infiniti G37 Coupe/Convertible/Sedan (VQ37VHR) 2009-2019 Nissan 370Z Coupe/Convertible (VQ37VHR) 2011-2012 Infiniti G25 Sedan (VQ25HR) 2014-2015 Infiniti Q50 Sedan (VQ37VHR) 2014-2015 Infiniti Q60 Coupe/Convertible (VQ37VHR) 2015 Infiniti Q40 Sedan (VQ37VHR) Please reach me on WhatsApp. Price slightly negotiable.