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Noise , in short I can not get rid of it .
entire cas harness is outside the bike , same result . Nothing except power , ground , cas and cmp , sensor ground and ign 1 and 2 connected . Still does it .
shielded cable still does it.
Cbr1100xx 4cyl
wasted spark
speeduino dropbear v2 - new
Bosch 7 pin dual channel igniter - new
12 crank
1 cam at 105deg btdc
have tried everything
ecu filtering is maxed out .
desperate, does it need some sort of shunt resistor , what resistance ?
Attached Files
IMG_6650.jpeg
- IMG_6654.jpeg
What HT leads are you using - assuming the coils are firing the spark plugs when the interference is occuring?
Some are definitely better at suppressing noise than others, also you could try resistor 'plugs if available in the type and heat range you're using.
So is it using dual output coils? Where is the ignitor grounded? What type of sensor does the cam use and what are the high/low thresholds?
Factory dual output coils
igniter has been tried to chassis/battery/head /block - all same result
ecu power ground to chassis/ engine / negative battery - same result
New factory leads - engine runs standard cr9eh plugs which are resistor plugs
cam and crank are both VR - scope attached - do not want to change to Hall sensors on this at all costs
Attached Files
- IMG_6735.jpeg
- IMG_6739.jpeg
The signal looks fine in that scope, was that with the coils unplugged or was the ecu still reporting an issue when this scope capture was done?
