VTT - B58/S58 Ignition Coil Kits - BMW/Toyota

VTT is proud to offer ignition coil replacements for the B58/S58 platforms. VTT started their quest for coils by contacting multiple coil manufacturing companies, paying for individual coils to be made then putting them through rigorous testing in the USA to ensure they matched or exceeded factory output. Once we were satisfied with the testing, we had the best performing coils made to our colors and specs. VTT Coils are tested against a factory Bosch B58/S58 coil. The VTT performance matches or exceeds the factory B58 Bosch Coil

These coils come in 3 colors, Red, Black, and Blue, and are not simply an aesthetic upgrade but match or exceed the factory secondary spark energy. 

The test setup was configured in compliance with the SAE 973-202011 standards with a modification to the measurement of secondary spark current. The modification being the use of a shunt resistor instead of a current clamp for increased accuracy of secondary spark current measurements. It is important to note that comparisons cannot be directly made between my tests and tests performed by others as conditions and component tolerances will vary. Much like a dyno, accurate comparisons can only be achieved when testing is performed with the same equipment and procedures.

Note:  To extract maximum performance from VTT coils minor tune changes are required to optimize dwell periods. See recommended Dwell times below:

• VTT N5x:  3.4ms
• VTT B58:  4.7msy breather

Vehicles Supported
BMW G87 M2
BMW G8X M3/M4, including Competition
BMW F97/F98 X3M/X4M, including Competition
Toyota A90 Supra