Performance 4x4 10mm 1HZ injector pumps are upgraded from standard using the highest quality genuine parts and custom components and test plans with years of in house R&D to ensure the best result for your vehicle. Our boost compensated 10mm injection pumps focus on drivability & fuel economy, a great all round touring/towing setup while keeping things in check engine wise. This injector pump is suitable in applications up to 150hp with appropriate modifications..