I bought a new Turbonetics ball bearing t3/t40b turbo in May. Within 300 miles I had ruined it by running to high of psi and basically beating the ever living hell out of it. . I ruined the bearings, both wheels and possibly the compressor housing. I emailed Turbonetics and told them exactly how I caused the damage to the turbo. They had me send it in for a rebuild. 3 weeks later I receive a new turbo. No part of it was rebuilt from my old one. Now that is how you make a customer for life. I had already bought a new one once they said they'd rebuild my old one for free but I didn't expect an all new turbo. They're one year warranty is great with no questions asked. I will now recommend Turbonetics turbos to anyone who asks.