New design. I have a 2016 Accord V6. It has VCM. Now you are going to have people talk about the VCM and tell you need to get a VCM Muzzler. Honda had issues with VCM. There are 3 generations of VCM. The current generation doesn't have the issues of past generations. Me personally, I had considered a VCM Muzzler but decided against it, I felt it wasn't necessary and 180,000 miles later, car runs like the day I bought it. I have always used use a good synthetic oil and top tier gas on very fill up. I'm not talking about higher octane rating i.e. Super unleaded. Top tier gas is a higher detergency gasoline standard than what the government requires and I have never had an issue with the VCM. I am not an engineer and I am just sharing my experience. You will have people try to scare you and say if you don't get a VCM Muzzler you are going to have issues and your engine will blow up (being facetious
. Take it with a grain of salt and do you. There are many people who have had no issues with using a VCM Muzzler but I just have an issue with manipulating coolant temperature and the computer thinking the car has not fully warmed up. Engines are complex and who's to say that that manipulation is not harming things. Again, I am no engineer but the guy who invented the Muzzler supposedly is one and I haven't heard of any issues using a Muzzler at least that I know of. I just never had the issues people are talking about. Not to say there are not any because Honda has had issues with early iterations of VCM. Just do your research and do what will help you sleep at night. I just want to say there are people out there that don't use VCM Muzzlers and have gotten many miles on their vehicle with no issues. My recommendation, it is very important to use top tier gas as the engine in the Passport is Direct Injected and I recommend a high quality 0W20 oil that has a lot of moly. I just have had outstanding results with my J35 when I use 0W20 that is high in moly. Most if not all Japanese car brands has high moly in their own branded oil to include Honda and Toyota.