Kennyx wrote:Try refine you fuel mapping , change to value in red circled to 80 , disable EAE or X-tau and AE ... try run again and let me know the result.
Joe Clark wrote:its worth blowing the sensor out with an airline too befor you cal it,
as your CR is low i presume this is a blown engine? what are you doing for intake? single throttle and plenum? how big? wats the runner diameter, engine cc, cam profile?
the reason I ask is I'm getting somthing similar, a stumble at cruise, think mine is due to an aggressive cam and large plenum, in my case 274 degrees seat timing, but 240 degrees @50 thou, which is more like the figure ecpected on a 290 degree cam on my engine... due to this there is a lot of lift on overlap, and i supect the 50kpa in the plenum is pulling the exhaust back into the chamber....
My plan is to swap to ITB's which should damp this effect, failing that I'll change the cam back to what was in there before.
Kennyx wrote:I think you better make sure all the sensor ( throttle, o2 , temp ) are set properly first.
Have you take out the ignition plug to check how it's condition ?
I have random misfire sometimes while cruising sometimes while accelerating. Not really load of RPM dependent. (Never happen at idle.)
I attached a picture where I marked one of them. I used a full throttle right after the misfire as a marker in the log.
I have replaced ignition coils, sparkplugs and leads as well. I am running MS3x full sequential ignition and injection.
Firmware is alpha18.
What do you think, is my misfire related to any of the fuel settings or it is something else?
I attached msq and SD_log.
Please if any of you have some time please take a look. My VE table is not blended yet it is just after some VE analyzer tuning.
Thank you very much.
Kennyx wrote:- Injection timing from 250deg to 500 deg in 10 deg steps
Change timing to 360 degree , just for the current test
Squirt per engine cycle = change to 2, for the test ..
throttle lag factor to 75 or 90, the rest 50
Reduce your ignition timing all by 10 degree
Change Ae to 100% tps driven .. change tpsdot to 1000 inorder to disable it
After the above change , test run again with around 20% throttle ... let me know the result
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