I was skeptical but decided to try this in my 2015 Kia Forte5 1.6l turbo GDI. I followed the instructions to the letter, inserting the product through the intake while my wife assisted holding the car at 2K RPMs. Waited the hour and the I could definitely feel the engine respond much better. Gas mileage and the idle seems to be better as well. I will use this every 10K miles as indicated.

I have a 2013 mazda3 and it hasn't been cleaned probably for 75k miles. After following instructions and cleaning intake, I started my car and went to go drive at highway speeds for 10 minutes. After the first bellow of smoke I immediately had lost most engine power, my check engine came on and was blinking, my DSC light tuned on, and I was running rich and has a misfire in cylinder 4. After getting it home and attempting another drive, after the second bellow of smoke, same thing happened. Went home, cleared codes, and went out for a third drive. Third time was fine. Car is back to normal, no codes, and runs better imo. Throttle seems to be more responsive or so. I'll be buying this often!

Very good

This stuff works great. It's a little spendy in my opinion and it's easy to go through it quick, but it works great at cleaning parts and breaking down carbon build up. I used it for valve cleaning in my BMW 335i with the N54. Anyone that knows this platform knows how bad the valves can get! This cleaner breaks it down quickly making it an easy job.

This stuff works great! I was getting a P050D error on my Autel after my check engine light came on. Code was for Cold Start Rough Idle and is caused by cylinders misfiring. The expensive solve is a replacement of spark plugs and fuel injectors, but I figured I'd give this a try, along with a bottle of Tecron in my gas tank.I followed the directions which were pretty easy, and a couple days later my check engine light went off!So glad I didn't have to go the route of replacing the fuel injectors! Will be using this stuff every 50K miles or so from now on!

It was easy to use. Just remember to do an oil change after using.

If you own a Car with GDI / Direct Injection, This stuff actually works and will be something I do, every time I change my oil.

Good price. Got it quick. Haven't used otnyet but I keep getting annemail to rate it.

Buen producto

Wow. Just plain wow.

Worked as advertised.

recommendable

This product really work. My Santa Fe 2014 runs like new!

My 2017 Honda Accord was chugging badly whenever I tried to pass or went past half way on the throttle. It only had 8k miles on it so I tried everything else first -new air filter, gas treatment - to no avail. I bought can of this and sprayed it thru the intake just past the MAF sensor. Worked good - no more chugging whenever I stepped on the throttle. 6 months later it started doing the same thing and gradually got worse. At 8 months it was horrible - I had to make sure I had plenty of room to pass since it would chug so bad whenever I floored it. This time whenever I ran a can thru it and started the 10 minute highway drive it scared me. As soon as I got on the road and stepped on the accelerator the car choked down and nearly stalled, then it sputtered and a HUGE cloud of smoke exited the rear of the car. The car then picked up and accelerated normally, but my check engine, low tire, and power steering warning lights lit up. The car ran fine however so I continued with my 10 minute drive and by the time I got home it was running like a top - flooring it would immediately push me back in my seat like it should. Got home and disconnected the negative side of the battery for a few seconds and all warning lights disappeared. It has been a week now and it is still running like new. I figured that there was a large amount of carbon that broke loose and hit the combustion chamber causing the huge smoke cloud which messed with the sensors in the catalytic converter and set off the codes. I'm going to get a oil catch can and start using this every 3000 miles or 6 months so I wont have such a build up again. Much cheaper than the $150 my local Honda dealer wanted to clean it out.

pretty good useful

183k miles on 4.6L F-150. Engine very well maintained and already great except for pinging issue under heavy load between 2000 and 3000 RPM even with premium fuel. No codes. Figured it had to be carbon build up.Followed directions on can and watched a Scotty Kilmer YT video.Pulled a small hose just upstream of the throttle body and applied there. After the 1 hour heat soak period it ran terrible for a minute as it was clearing ita throat. And then it started to run great.It fixed the issue. Now I can use full throttle at any RPM or load and zero pinging plus it runs and idles noticeably smoother. Mid grade is in the tank now...can't wait to see if it will run on regular fuel again without pinging.Good stuff!

Does a decent job of HELPING to break up the carbon soot. Still requires some scrubbing with a brush. I will continue to use this product

I have started using this on my Audi S8 D3. Easy to inject and I feel that it is helping with carbon deposits. Will keep applying every few thousand miles for now and see how it goes. Going to try on BMW 335i N54 direct injection motor next..!

read the directions and you will be amazed how well this stuff will clean GDI valve carbon build up. the procedure takes about a bit over 1 hour but if you have a GDI engine this cleaner will get the gunk out of your throttle body and valves and if you have a turbo, follow the directions and this will clean and lube it very well.

Id recommend this over seafoam anyday