Any idea of what BHP/driveability improvements I should be looking to get from fitting a Unichip along with the list below ??
It's a 2001 Vectra Sri 150
K&N Panel filter
3 pipe mod
Remus straight through (to an irmscher 'letterbox' backbox)
Precat removed
(all made a noticeable difference...especially the precat)
Does anyone have a similar setup ??
Opinions appreciated.