I bet it's just carb cleaner. Carb cleaner can damage the MAF.

Can't see much of the solvent surviving the combustion process, so very little will be drawn back through the EGR valve (assuming it's open).

You need to take off the intake hose from the intercooler and get an assistant to rev the engine while you spray it. Probably just as easy to take the EGR valve off and give it a proper clean.

Try it can't see the stuff doing any harm.

I suspect that's the answer. If your EGR valve is working, it won't break it and may even give you a warm feeling that it's somehow cleaner than it was.

If your EGR valve is clogged then nothing will be going through it anyway, so short of the intervention of the Wynn's fluid teleportation fairies, it cannot make any difference.

Or, in other words, I detect a strong odour of oil of snake.....

Edit: Remember that you have lies, damned lies, statistics and then of course, advertising.

Edited by TeeCee on 15/02/2013 at 14:11

Well against the general consensus I decided to try some of this egr cleaner. I sprayed it on the outlet side if the maf thus avioding damaging that. The results...well it has definitely made a noticeable dufference. As good as taking the egr valve off and cleaning it, probably not but for 8 pounds a tin I think it represents good value.

Ill let people know how long it lasts for!

I remember recipes for clearing clogged exhaust systems on two-strokes, where the results from burnt oil might resemble EGR coatings. Required baffles to be laid in sodium hydroxide solution in a bath at boiling temp., for an hour or more!, to shift the deposits. Have a feeling that buying a nostrum which is squirted into the intake is 1. asking for trouble; 2. not very likely to shift much.

Edited by nortones2 on 23/07/2013 at 20:43