A4 Boost Controller
It might cause "limp mode" and give you "Check Engine" light or more. (I experienced both problems)
When I read information about BCS, I liked it very much and really wanted to try it, although many people didn't recommand it. Well..... so, i tried it and here I am.... took off that damn thing and got money back....
If I were you I would do ECU upgrade.
Jin
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Yes, you will void the warranty BIG TIME !!!!
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I re-checked every single wire and even called company, but couldn't solve it.....
Jin


