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What product should I use. I see a lot about CRC but also some tests on YouTube show its not that effective. I have a 2019 Honda Civic sport 1.5 T. I believe there are a couple places to spray. Of course after the mass airflow sensor inside the intake. I also hear of some owners using a vacuum line for direct access to the injectors but I cannot figure out where it is. I need to locate the brake booster line as it connects directly to the intake manifold. Anyone have any input. It's greatly appreciated as my car has gone into limp mode because I let it get bad. Had no idea and at 60k no cleaning my car tapped out. I'm surprised there was not more info about this maintenance procedure as this is the first I've seen

V/r
Jack