Can you put twin turbo in a Pontiac Sunfire?

Installing twin turbos on any vehicle requires significant modifications and expertise. The Pontiac Sunfire was never designed to accommodate twin turbos and attempting to retrofit them would be challenging and may not deliver reliable results.

It's essential that any significant alterations to a vehicle, like adding twin turbos, are supervised by qualified and experienced automotive professionals and that you carefully plan, research, and consider the performance benefits, challenges, and costs involved.