Though this did improve my vehicles performance. It did not reset the check engine light. I’m going to try using another week, but if check engine light stays on then You would still need to see a mechanic to pass inspection or emissions.
Verified purchase: Yes | Condition: New
This formula acts fast to clean cyclinders, piston heads, injectors and the catalectic converter. My 'Check Engine' light came on for 'bank 1 (passenger side) and so I ordered this German brand cleaner, even though it does not claim to Guarantee my Audi Q7 would pass emmissions tests seems to have worked! Within two days after putting it in the gas tank the 'Check Engine' light went off on it's own. I recomend this product for use on modern automotive uses. Also after research of causes related to this 'Check Engine' fault, I've switched from regular gas to Premeium. I now vary my driving style to drive it a little harder to get RPM's up. I also had the system checked for leaks prior to using it. Because leaks can cause your vehicle to throw the 'Check Engine' fault code! ....my OBD2 sensor reads normal now on my cell phone! Read full review
Verified purchase: Yes | Condition: New
My X5 shows P0420/P0430 codes for catalytic converters bank 1 and bank 2. After using this product 2X as instructed, I drove the car in an open speed highway so I can get the Rpm upto at least 4-8rpm. The codes disappeared. I tried this product because it claims it is made in Germany and could be compatible with BMWs.
Verified purchase: Yes | Condition: New
This product is awesome. The first time I used it, following the direction at 1/4 tank gas . The engine light went off after 26 miles which enabled my car to pass emission the following day. I love this product. Thanks Rex
Verified purchase: Yes | Condition: New
Absolutely amazing product - I have a 2010 Lexus RX450H that I bought site unseed from the mainland and had it shipped to Hawaii at great expense. 142,000 miles - the tailpipe was totally sooted up with carbon. One O2 sensor was bad. I changed out the O2 sensor, injectors, plugs - cleaned the intake manifold and throttle body - MAF sensor. This all helped some - but when I ran a bottle of this product through the tank - and then refilled the tank OMG - it was like I was driving a new car!! My gas mileage - when I first got it was in the 24-25 range - went up to 26-27 after all the work - then - with this additive after one tank - it went to 30!!!!!! HIGHLY RECOMMENDED.
Verified purchase: Yes | Condition: New
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