Unsure of the state of your CHRA’s, whether brand new from a questionable source or rebuilt? DON’T install them without having a proper High-Speed balance done! This is the #1 most critical factor when building a turbocharger, and is even more important for performance turbochargers or small twins that see a LOT of RPM. We use a Turbo Technics VS3 balancer, and balance most units down to under .5G
Not all turbos will be able to pass a high-speed balancing test for any number of reasons (usually poor assembly, bent shaft, etc), if they will not pass, we will send you the specs they are in, and as close as we could get them. We then will give you the option to send them back, or we can disassemble, and rebuild them in-house using our other balancing, and assembly tools to ensure a properly built/balanced unit.
The service is $79.99 each for most turbos, and we have the capabilities to balance most units. If sending in twins please choose TWO as the quantity