Same engine I had in my Vectra as well...
Decent power output, 6 speed box, nice and torquey! Pretty poor fuel economy for a diesel motorway cruiser though, like 45mpg avg doing the same routes as the 180bhp Golf would avg 60mpg and a 135bhp HDi 55mpg.
Thermostat was broken on the one I bought, cost £70 to replace, genuine only at the time. EGR got stuck open so had to be blanked. Turbo was on it's way out when I sold it at 110k (bought on 99k, had already had clutch and DMF replaced at 77k). Didn't like cold starting without glow plugs which is odd for a CR diesel. Spring snapped on mine between delivery and my first drive in it, wrecked a tyre, ruined any trust for my ownership tbh. But that said, I did own it for a year which is longer than most 306s I've had!
With mapping, you can use MPPS but it's EDC16 afaik, bigger map and more likely to get bricked than the old EDC15 stuff.
Decent power output, 6 speed box, nice and torquey! Pretty poor fuel economy for a diesel motorway cruiser though, like 45mpg avg doing the same routes as the 180bhp Golf would avg 60mpg and a 135bhp HDi 55mpg.
Thermostat was broken on the one I bought, cost £70 to replace, genuine only at the time. EGR got stuck open so had to be blanked. Turbo was on it's way out when I sold it at 110k (bought on 99k, had already had clutch and DMF replaced at 77k). Didn't like cold starting without glow plugs which is odd for a CR diesel. Spring snapped on mine between delivery and my first drive in it, wrecked a tyre, ruined any trust for my ownership tbh. But that said, I did own it for a year which is longer than most 306s I've had!

With mapping, you can use MPPS but it's EDC16 afaik, bigger map and more likely to get bricked than the old EDC15 stuff.