This is the type with a tube that you would spray into the intake past the MAF so the product would clean the valves. Anyone use this or a similar product on a fit?

 

This GDI cleaner appears to be an aerosol that uses propane as the propellant to atomize xylene solvent, 2-butoxy solvent, and a mixture of stoddard solvent/ethyl benzene into the plastic intake "just past the MAF". The issue I have is that it

- requires someone to man the throttle inside the car to keep the engine from stalling
- requires another 2nd person to carefully spray the can after the MAF in the intake in short bursts
- makes no mention of whether this mixture is plastic intake friendly
- appears to be required every 10000 miles
- doesn't say what happens to the solvent and junk that gets burned and goes through your engine then that expensive catalyst (I'm looking at you butoxyethanol)
- Lucas had a wide range of improvement in the video https://lucasoil.com/gdi/
- also mentions that you need to change the oil soon after administering the GDI spray (hmmm it's going to the oil?)

I don't get that it's backed by science and testing in that the positives outweight potential unmentioned negatives.

 

I appreciate your Insight and information

 

I'd like to hear others thoughts - the BG products cleaner is a closed-valve then soak procedure that then has to be removed out from the top of the valve intake then cleaned with a second step.

It seems to me that preventing the deposits and cleaner from entering the engine is the ideal cleaning method. Diesel intake cleaning is mostly done this way (either using heat to burn the intake deposits or removing the intake/cleaning away from the engine (VW Diesel).

 

Are your valves dirty? I'm sure it cleans something.

 

It does clean something - the issue is do you want that something to enter your engine, be burned or accumulate as more soot somewhere else, then clog the cat. All of the professional products or blasting techniques for GDI engines do one thing: the work on a completely closed valve and remove the material (chemicals or blasting material) out the same way it went in.

In addition do you want to be spraying a solvent through solvent-soluble plastic air intake tube into the engine?

 

I personally wouldn't use it and if there isn't a problem I wouldn't worry about it.