cat back exhaust by the looks of it

i havent seen any engine lights

when the car starts normally it is fine under all driving conditions under boost etc. but when it starts like sh!t it will run like sh!t for the 1st 5 minutes then it will sort itself out.


light flashing on cruise control? i havent looked for it ? what would that indicate?

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R32 GTR - 800ish

60.7 Long Track at Barbs
57.6 at RAC Reverse circuit.