Koltz Performance LLC

DIY Performance

Build guides for upgrades you fit yourself. Each one steps through the job on the 3D engine: what comes off, what goes on, and the fasteners for every step.

Builds

Before you build

Check the law where you drive. Changing or removing emissions equipment on a road car, including turbos and catalytic converters, is restricted under United States federal law, and California requires an exemption for aftermarket parts that affect emissions. Many conversions like these are sold for off-road or competition use only. This is not legal advice.
A build is a system. More boost needs matching fuel, a tune written for the new hardware, and usually cooling and clutch upgrades. Each guide lists what is needed beyond the kit.
These are build overviews. They are written from public install write-ups, not from a finished kit. Steps, fasteners and part numbers will be updated when the kit is final.