I'm looking into getting my 2014 Cruze SRI tuned and was wondering if the tune formates the whole system and override all existing data or is there still evidence of the previous tune? I ask this as I don't wish to void my warranty with Holden and would l

This is a grey area admittedly. I say this as we have some Holden dealerships, that offer this tune as a dealer option. In summary, it is not possible for a Holden dealership technician to recall any evidence of any prior tuning. However engineers at Holden should be able to extract this evidence. To mitigate any risks associated with voiding your warranty, you would need to flash the car back to standard when taking it into service or making a warranty claim. Please note cannot make any sort of guarantee nor do we condone commission of warranty fraud.