Instructor of the Stig™
The Turner Performance Module is a direct plug-in to the existing engine harness for factory appearance, fitment and an instant gains.
These are simply amazing gains! Installation is easy and is completely reversible, making this the easiest and most effective power upgrade you will ever make on your BMW.
If you're looking for a substantial bump in power output, with minimal downtime for installation, full serviceability, and can be reverted back to stock then the Turner power upgrade is unbeatable!
Click HERE for your BMW F8X M3/M4 Turner Performance Tuning Module