u/Legal-Sprinkles-1436

so me and my mate both have e36 325i preface M50B25TU, and we both have the same rattle/hiss noise on deceleration from 3500-2000rpm, he’s already had his vanos rebuilt and primary timing chain tensioner replaced which hasn’t fixed it, so we’re wondering where to go next, i don’t currently have a video of the noise but will get one when i can and update, thanks in advance👍🏼