CDI Battery CD Ignition Tester WSM 511-9701 Simulates Trigger and Points to allow testing on engine or bench. Allows testing of pulse EFI injectors At Pwc Engine,com we offer top name brands including WSM, Pro-X, Wiseco pistons, OEM RIK Japan rings, Nachi, Koyo, & KBC Engine bearings. PWC Engine use the highest quality gaskets and seals in the industry such as Athena USA, factory used ARS precision quality seals when available and much much more! If you are looking for performance parts, we offer the best distinguished brands and hand pick the parts that we know work and use daily.