Weird misfires !!!

[skevosEP91]

Hi guys and greetings from Cyprus!!!

I come up with this problem within these few days and don't really know what to check or what is the cause ...
My Ep91 Glanza V when i am trying to hit boost on every gear it starts to misfire.. This weird misfires come with a weird jump on the rev counter..
For example when i am at 4500 rpm and builts boost suddenly the rev counter jumps at 6000 rpm or 7500 rpm and it starts misfire...
Also this happens in daylight BUT at nights it boosts normally as it should and that's why it drives me crazy.
I changed distributor and re-gap the spark plugs.
If any one has any idea or had any experience with the same problem or anything similar please help because we are in the middle of tuning and i don't want to push the engine further without knowing what malfunctions.
Also the car runs a standalone Adaptronic e420c but is with the factory ignition system with just an MSD coil and aftermarket Spark leads..

Thanks in advance , any help or opinion would be accepted and respected!!!

 

[Jay]

Just a thought but is there anything fitted that could be getting power via the lights?

Just mentioning as I was given a Glanza that only misfired during the day and it turned out someone had managed to wire a FCD via the headlamps.. mega lolz

 

[skevosEP91]

Haha :haha: no mate the wiring is correct and double checked.. The problem started after i got the car back from the tuner to fix some mechanical issues!!!
One thought i have is there any chance of an igniter overheat during the daylight and maybe that would be the cause ??