These Tuning boxes, GREEN I assume is for ecomomy, CRD2 and RED are for power (as per website).
Anyone know the difference between the CRD2 and RED, which gives the most "poke". The CRD2 is 50 quid more so is this the better of the 2???
Also does fitting one of these make the "sport" button redundant??
Any help would be appreciated.
Astra SRi CDTI 150