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Forum; General Turbo Diesel Topics; Product/Accessories Forum (NO Engine/Transmission Discussions) Installed ISSPRO Turbo Temp Monitor. ISSPRO R4130 Turbo Temp Monitor. Install Sheets Return Policy Service. ISSPRO Turbo Temp Monitor (above). ISSPRO KNOWS DIESEL!! We are an OEM supplier to many diesel vehicle manufacturers. Choose from ISSPRO EV2 R3000, EV2, R3000, R5000 and R6000 series gauges to monitor your Dodge Cummins truck's performance. Sub. Install Instructions Tech.