Originally Posted by
burnzy
what even the walnut blasting? I’m guessing the GTR’s are direct injection? If so do they not suffering with coke issues?
edit: your rs6 would suffer too surely? But not as bad as the N/A cars iirc.
GTR's are not DI....the RS6 probably is.
And there's a huge difference with the walnut blasting which blasts AND removes the deposits and done against closed valves.
A lot of those other bullshit claims may well dislodge some crud....and send it where ? through the engine, into the CAT, DPF ? both cheap items of course.