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Well had car back from having carbon build up cleaned.. took it out drove tidy and temp gauge hardly moved so took it out drove a bit faster temp gauge still same.. so took it out up m4 tripple digits and guess what... Temp gauge still basicly same.just a tiny tiny bit hotter... Turbo glowing completely orange but top engine Luke warm the curved boost pipe Luke warm long boost pipe over engine cold.. I'm completely puzzled and deprest have missed my car and now I have to take it back in the morning 