Audi A6 with multi spark discharge

Sep 24, 2014
2
0
501
35
Beijing
I installed a multi spark discharge on my A6, and it works perfectly, but one of my friends told me that it will lead side-effect to my car. I dont meet any problem till now. Any bro can give advice?
I am advised to install this device by my colleague, and he also install one on his BMW.
 

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