i know that if i go from the live side of the relays to earth, they are at a good 12 volts all the time. when the relays click out/in again the voltage does not budge on the live side which point to the earthing through the ecu. the earths have all been cleaned and checked and are around 0.3 ohms.
when it goes into limp mode..... it still runs but at reduced boost i take it... and then it comes back after seveal seconds once you have let it idle for a few seconds... this sounds familiar, ...