mazdaspeed 3 loud sound not sure what it is
2008 Mazdaspeed three, this sound just started today and slowly got louder and worse. It started off only over 2K RPMs, and then it gradually got louder and now makes the noise when I idle. I have my intake off right now in this video because I thought it was my turbo scraping against the housing. I have no idea what it could be. It sounds terrible though and it’s getting worse. I just did injector seals about 5000 miles ago I put overspeed seals and everything has been perfectly fine and normal and this noise just came out of nowhere today.
I have cob intake, front mount intercooler, CS cat back exhaust, freek tune, just put a new stock turbo in around 10,000 miles ago. car has around 140,000 miles. VVT got done 15,000 miles ago.