dieseldaz wrote: ↑November 11th, 2022, 9:18 pm
Can you alter dwell for stock coils or are they already at there optimum/limit??
Better late than never. Stock coils were tested at way higher limits than they are stock, but at the same time, you'll just worn them out quicker. How quicker? Less than most aftermarket (excluding AEM and some others) that weren't initially designed for the RX8.
stock coil outperform most other coils including AEM at redline imho
there is a true racing two stroke coil from mercury but its not the one the ign1a is based of, and that coil is at 2ms charge where the ign1a is at 8ms 300 8M0077471
Ign1a could never be a racing 2t coil as its to slow. their racing engines run 7500-9000 rpm and than 8ms full charge means nothing if they have 2ms (at recommended duty cycle)
Return the coils and purchase oem..
BHR coils max out at 4.5ms (self discharge) and than produce 60mJ of energy..
OEM ignition coils provide 90mJ of energy at full charge of 3.5ms. energy delivered is proportional to time.
we are time limited (dont have time to charge the coil to deliver full energy of the coil. so you lose a lot running a "slow" coil like sold by BHR (and all other including ones selling ign1a).
OEM ignition dwell table is to much in region above 5000rpm for the BHR..
Walle wrote: ↑February 19th, 2025, 12:26 pm
Return the coils and purchase oem..
BHR coils max out at 4.5ms (self discharge) and than produce 60mJ of energy..
OEM ignition coils provide 90mJ of energy at full charge of 3.5ms. energy delivered is proportional to time.
we are time limited (dont have time to charge the coil to deliver full energy of the coil. so you lose a lot running a "slow" coil like sold by BHR (and all other including ones selling ign1a).
OEM ignition dwell table is to much in region above 5000rpm for the BHR..
Walle wrote: ↑February 19th, 2025, 12:26 pm
Return the coils and purchase oem..
BHR coils max out at 4.5ms (self discharge) and than produce 60mJ of energy..
OEM ignition coils provide 90mJ of energy at full charge of 3.5ms. energy delivered is proportional to time.
we are time limited (dont have time to charge the coil to deliver full energy of the coil. so you lose a lot running a "slow" coil like sold by BHR (and all other including ones selling ign1a).
OEM ignition dwell table is to much in region above 5000rpm for the BHR..
Is that based on the old information when they were selling the "LS1" style ones?
the new body style is repackaged LS2 ignition coil. same performance figures still apply.
Ignition coil design is a MAJOR task, something even car companies rarely take on them self (that is why nissan has settle on rx-8 ignition coil rev-0 for their GTR35) .. that design was owned by "Denso-Matutoyo" or however it is spelled... Only later mazda opened the check book and paid for one off design which they hold the rights to for Rev B/C coils.. that is why NGK and Denso are close but not as good as genuine...
RRP took ign1a and changed the driver, but that doesn't change the coil properties, charging time ect... you can improve a little on efficiency if its an old coils but that is %ges.. or compatibility with PCM/ECU...
BHR took LS2... ect ect...
