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The RKP front lip does not lower the M5's ride height as it does not extend past the lowest point of the front bumper
For OEM exhaust system
The absence of the catalytic converter requires the modification of the electronic management to avoid warning lights on the dashboard (CEL)
leaving essentially no gap after the lip is installed
especially at lower RPMs
Evolve ECU Remap Performance Upgrade - BMW E60 | E61 5 Series 535d (286 BHP) Evolve Downpipe The RKP front lip doesThis ECU remap is for installation at Evolve or at one of our dealers. The software upgrade was designed and tested at our dyno facility and on road to give optimal performance with maximum safety. Much time was taken to develop the software to give improved throttle response and factory like drivability with a progressive power delivery. The end result is a 535d which is significantly faster to accelerate and smoother to drive while at the same time