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

i also had this similar problem of lean mixture at 90+kpa, the VE table got odd values when it reaches above 80kpa. right now i am suspecting my throttle body bore diameter is oversized, 1.3L engine with 76mm diameter. i got rid a little of the problem when i noticed the fuel pump is not getting ...

what problems will I have if I use a much larger throttle body?

it's a 1.3L engine (2E from toyota) converted from carb to TBI setup. i'll be checking the pressure the next day with some testing methods ive read. i'm expecting for someone to reply if they had the same problem

when I am trying to calibrate my VE table, it seems that as the manifold pressure rises, the VE values doubles up reaching 100+%VE and it is still lean. the car can idle well and run rich enough below 70kpa with the VE values without being absurdly high

by adjusting the TPSdot high so it wont trigger. say around 50%/s or 15V/s

i have a TBI setup. the MAP oscillates around 1 to 2 kpa especially during cold start.

when the MAP value oscillates, does that mean there is vacuum leak?

cant say that it is due to the vacuum advance. i also have that problem where my engine wants to backfire but the ego says I am in a rich state. I have the vacuum advance inserted but same thing happens. Right now I am suspecting that there might be problems on the distributor

try checking the relays. other than having a busted injector, it my be shorted to ground try doing continuity check

it is natural for the ego to read too lean mixture during fast decel because of sudden vacuum when the butterfly flap closes fast. About the fuel delivery cut when the throttle is on idle position, maybe some systems cut the supply when decel and resumes supply when the engine reaches the idle rpm ...