MSefi.com read only forum (Jan.15,2018)

My project is 4 stroke 171cc scooter with 2 wire pwm idle valve
I capture the PWM signal from ECU, the pwm signal is approx 37 hz duty cycle around 23%
But when i try to enter the Frequency,it say my HZ too low need great than 80hz
How can i to break up this issue? change valve? or update firmware ...

http://i227.photobucket.com/albums/dd291/nnffssaa_2007/323232322-1.jpg
http://i227.photobucket.com/albums/dd291/nnffssaa_2007/misfire.jpg
i set dwell time is 3.5ms,and maximum spark duration time :2.0ms
and what factor also can be affected spark duration?
i'm very confuse with that
and also ...

yellow is Secondary Ignition
red is Primary Ignition
blue is rpm

my ride is 100CC 4stroke ATV
i have some question hope everyone can help me :lol: :D
Today i use pico to find out misfire.
but i saw some wrong with my spark duration :!: :!:
my spark duration just 380 uS :?: :?: :?: :shock: :|
and i tried to modify dwell time , but spark duration not apparent ...

Matt Cramer wrote:

nnffssaa wrote:but i have some question
when i cranking the engine,the wue always on off .But i set that 100

Well, yes... 100% WUE means the WUE is off.

but when i cranking engine WUE indicator always flicker,and engine difficult to start.

this is my MSQ

but i have some question
when i cranking the engine,the wue always on off .But i set that 100

Is your MSQ set up for using a MAF?

It might help if you posted a whole copy of the MSQ - that would give more info on what settings might be locking you out.
thx for your reply
when i saw your suggestion, now i find out the problem.
that i select map only. when i selection adjust map for bar,the ...

since i update firmware from 2.6 to 2.891(MS II V3.57)
can't set the basic table :(
what's the problem with that?
and thanks for reply :yeah!:
http://i227.photobucket.com/albums/dd291/nnffssaa_2007/kkk.jpg

MS new guy
i use sym RV 180 engine(motorcycle engine 171 c.c) with bosch 0 277 100 124 ...