ZEZ AUTO

Does anyone know the specs for the high and low pressure turbos on a c15 acert? Specifically the wheel sizes and the housing sizes. I'm trying to figure out turbo sizes for a custom 6nz compound setup and the math for determining this is outside my pay grade. Figured the stock acert setup would be a good baseline to find comparable turbos.

go check out the heavy truck manuals, theres a borg warner spec sheet for turbos

What prefix?....and what HP the lower Hp arrangements (475-550) use a smaller high pressure than the 600+ ones.