F90 M5 Catless Downpipes
RK-Tunes Catless F90 downpies eliminate the heavy and restrictive catalytic converters in the factory exhaust system. By eliminating the catalytic converters, your turbos can breathe more efficiently which reduces back-pressure. This reduction in back-pressure creates a faster and more audible turbo spool, a deeper and aggressive exhaust note, and most importantly, an Instant 30WHP+ WHP gain.
*Most companies downpipes are missing some or all of the factory brackets. We have seen this creates vibrations and the ECU will pull iginition timing thinking it is seeing knock / detonation which will make the car lose power. Our downpipes have every factory braket and fit like stock.
*Most companies use a larger cheaper flex section that will rub against the trasnmission. Our downpipes use an OEM style flex section.
Removing the primary cats will cause a check engine light and will require tuning or a spacer to fix the light.
Seconday cat delete will not cause a check engine light and requires no tuning changes.
F series M5 / M6 Front Mount Intakes
Our RK-TUNES front mount F series M5 / M6 intake design will outflow all other Front mount intakes for M5/M6 's. Many companies use a reduced and squished pipe to...
F-Series M5/M6 Catless Downpipes 2011+
Free up your exhaust with our Catless downpipes! RK TUNES catless downpipes eliminate the heavy and restrictive catalytic converters in the factory exhaust system. By eliminating the catalytic converters, your turbos...
F90 M5 Front Mount Intakes
Our RK-TUNES F90 M5 Front Mount Intakes design utilizing high quality aluminum piping that can be powder-coated or painted any color, 5-ply wire reinforced silicone that can never suck shut, full 3.5...