2023 s5 The product didn’t come with an o ring that the support staff blamed on me losing (another whole story support staff is an absolute joke) so I went and found a new replacement on a new in box one that a local friend had (he didn’t install it because of all the bad reviews but well I wanted to know for myself). Once installed the dump valve worked for a week then started throwing a code every time I get above 6 psi after working fine for 2 weeks. I cleared the code took it all apart to make sure it was all sealing properly and then ran it again down the same stretch of ride worked fine for about 4 pulls then again same code. I then thought maybe mine was messed up form the start so I took the spare one I now had sitting here and installed that one. Same code within 3 days then the code came more frequently. This product is a piece of trash just like their support definitely not worth 300 ish dollars. It’s junk. They claim it won’t cause issues but well it does. Put my diverter stock valve back on and guess what no codes. Their support staff is so bad that like my friend I’m not even going to attempt to send this trash back I’ll just eat the 300 and blast this terrible product any chance I get.