k24
tsx pistons
k20z3 head
k20z3 cams

compression is 225-230-230-230

valves are set at .08 on intake and .09 on exhaust yes i know alittle tight

fuel pressure 65at idle
310 injectors

under load there is a miss or studder. car keeps accelerating....air fuels drop alittle but not much.

have changed:
coil packs
spark plugs
drained fuel tank put new gas in
new fuel pump
new fuel pressure regulator
reinstalled tune on kpro
all grounds

data log:
injector duty cycle 80% on kpro
injector opening up to 15ms (is that my problem?)

also data logged
battery volt 14.2
eld amps 3.2
eld volt 19


are my injectors too small??

i'm making 243 at 7800 and still climbing...but that is where rev limiter is set.

gonna move the ecu to see if it is getting a weird vibration off the cage.

thanks for the help

retune on dyno....NO MISS....on track first session....MISS returns!!! grrrrrr....anyone??

chad

 

In to see the result of this since I helped trouble shoot it at the track to no avail... I am almost wondering if wrapping the ECU in dynamat would help with the vibration...