After I have installed SOS Big bore throttle body and SOS Super ECU with zif soket, Headers/exhaust catalitic pipes of Taitec and from time to time Check engine light comes out. After I shut the engine it goes off, and might appear again without any logical sequence. Quite difficult to have it checked with dealer, since when it's on - I have no time/dealr have no room, when they/I have time - it does not appear...Have you faced same?