M12MTR Posted March 5 Report Share Posted March 5 Howdy. Had a great run out at the weekend. 2.5L GTS 2018. Boost PSI pressure was up and down, as expected due to driving, load, speed etc. My query is; I saw a maximum of 11PSI. Reading other 718 forums some say totally normal but others think a bit low..... and should be hitting 16 to 18 PSI on the GTS. Anyone have any experience of the boost pressure values? Cheers. Quote Link to comment Share on other sites More sharing options...
Patt Posted March 6 Report Share Posted March 6 The boost gauge is a very simple vacuum gauge. Have you tried knocking it up another cog and then build up the boost? I found I got more boost pressure using the red button. Quote Link to comment Share on other sites More sharing options...
zagamuffin Posted March 13 Report Share Posted March 13 From my Cossie tuning days I used to boot in in second with foot across the brake to get it boosting and watch the gauge. Make sure roads wide and clear as can be tricky if not used to it Quote Link to comment Share on other sites More sharing options...
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