Installation: • BMW E36 full ISR blast pipe exhaust system... IG: @Rico_theunprofessional @RZRacingUSA Turn on the notification bell for the upcoming videos on this series. ISR's new modular exhaust system utilize the same mid section with interchangeable cat back section. I personally prefer the resonated cat back for the deeper tone, but I would still slap the blast pipe back on for track use. ISR Blast Pipe full exhaust system: https://www.enjukuracing.com/products... ISR Resonated full exhaust system: https://www.enjukuracing.com/products...