Welcome to TPiS.  We offer a full range of products for GM cars with EFI.  Specializing in high performance, we manufacture throttle bodies, intakes, exhaust products, cams, and many other parts that can offer increased horsepower.   We also offer a number of products from other manufacturers at a competitive price, and modify parts for specific applications for additional power.  Our fully equipped machine shop can also custom build any engine to suite your specific needs.  Street, drag, road race, or custom rod, we can build your dream powerplant.