Hi,
I am not satisfied of my car's performance with the new upgrade and started to investigate. My thought is weak spark
![Undecided :-\](http://www.vemssupport.com/forum/Smileys/default/undecided.gif)
.
The thing is when I rewired the harness discovered a missing ground (4a) on 3 coils. How come the car was still running with no problems? Is it possible that the coils are partly damaged?
The timing is between 14-18deg and IAT is 42 deg max, 230kpa boost and I see too high exh.temp and the power is not what I thought it should be. There is no big difference between 180kpa and240kpa boost.
I couldn't find how to attach picture from Megatune.
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