Terraclean

[neiller]

Any one here used terraclesn to clean the carbon from.their engine just seen an ad saying its available close to me now !

My car is a 2007 gti standard with 75k



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[white91]

I don't think it will do what you want it to, only real solution is to strip it down


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[dronners]

seeing as the GTI is direct injection you'll only get cleaning of the cylinders and faces of the valves.  it wont touch the inlet ports which are the real problem here

[Vwgticrazy]

Had mine done by a friend who has terraclean it got rid of a flat spot and mpg went up about 3mpg.

[GTIEagles]

An Italian tune up is probably just as benefical to be honest!

[flashp]

I have no experience of Terraclean but I hear it may not be successful for direct injection engines, however some will say that they can do it now with special adaptors and a change in application method.

However, for interest I did post this a while back which may (or may not) enlighten you. 
http://www.mk5golfgti.co.uk/forum/index.php/topic,79369.msg825776.html#msg825776

I mention catch cans in this thread and I'd say the jury is out on their effectiveness. Short of introducing an extra injector (or WMI) to wash the gunk off the rear of the inlet valve and clean out the chamber there's not much can be done about this feature I don't think except treat it as mechanical maintenance task every few years.

[Dan_FR]

Terraclean is a waste of time on a direct injection engine, just buy a fuel cleaner that goes in the tank if you want to 'clean your injectors'.

A Full PCV delete is the only thing that will really help (R-Tech sell a kit that Vents to atmosphere). Catch cans still recirculate hot oily vapor and tend to mainly catch water vapour from my experience on the TFSI. You will still get some build up that seems to be from the valve stems but that shouldn't be much.

WMI alone was proven to not be 100% effective on keeping them clean, and certainly won't tackle any hardened deposits. Manual clean, full PCV delete (not the £45 ebay jobbies that just remove the front PCV valve and force everything through the rear breather in to the turbo) and WMI are what you really need if you want to keep the inlet clean