Claviger
Aspiring Student
- Joined
- Jul 25, 2014
- Messages
- 6,934
- Location
- Olympia Washington
- Ride
- '21 Z H2, '14 R3R, '02 Daytona 955i
For those wondering all my hoopla about parallel vs serial, this is exactly why.
Each coil driver circuit can only output a certain number of amps per channel (per coil) and a total for the whole circuit combined. Exceeding either will result in MOSFETs entering protection mode, or overheating, depending on the specific IC used.
By using the 2002-2003 R1 coils, the circuits are already drawing roughly double the amperage compared to the stock coils.
When using the ones Joe had at 0.7 ohms, the amperage is roughly quadrupled at the ECU side, and is almost certain to end up tripping any built in protection circuitry (if any) with per channel amperage exceeding 20 amps (way too much for a price point ECU).
Since doing this mod, I've learned there are a massive number of compatible coils, some are safer to use than others. The R1, 2002/3 coils are a good fit electrically, but beware any coil advertised to fit an R6 or Vmax, as Joe found out the hard way unfortunately they won't work.
Each coil driver circuit can only output a certain number of amps per channel (per coil) and a total for the whole circuit combined. Exceeding either will result in MOSFETs entering protection mode, or overheating, depending on the specific IC used.
By using the 2002-2003 R1 coils, the circuits are already drawing roughly double the amperage compared to the stock coils.
When using the ones Joe had at 0.7 ohms, the amperage is roughly quadrupled at the ECU side, and is almost certain to end up tripping any built in protection circuitry (if any) with per channel amperage exceeding 20 amps (way too much for a price point ECU).
Since doing this mod, I've learned there are a massive number of compatible coils, some are safer to use than others. The R1, 2002/3 coils are a good fit electrically, but beware any coil advertised to fit an R6 or Vmax, as Joe found out the hard way unfortunately they won't work.