Video VIDEO: TOPDON USA at AAPEX 2019 Charles Pilcher of TOPDON USA introduces some of their new diagnostic equipment. Advertisement ByTechShop Staff Writers on December 12, 2019 AdvertisementClick Here to Read MoreAdvertisement Charles Pilcher of TOPDON USA introduces some of their new diagnostic equipment. Brought to you by TOPDON USA. Advertisement In this article:AAPEX, TOPDON Click to comment Video: TechShop’s Tool Minute: Diagnosing Misfires Video: BOLT ON TECHNOLOGY Tech Tip Series No. 6 Video: TechShop’s Tool Minute: DTCs P0171 and P0174 Video: Elring: Properly Replacing Intake Manifold Gaskets on European Vehicles Advertisement VIDEO Watch TechShop's latest discussions and explanations. PODCASTS Listen to the latest episode of "The Code Reader". SUBSCRIBE Stay up to date with all the latest TechShop news.