(G) Vehicle/engine id

Hi all just after some info really ive got a 04 plate doblo 1.9 jtd sx now im thinking of either a remap or tuning box but after viewing a few sights seems there are different models etc of the jtd as some are 100 105 bhp etc etc basically want to know what mine is as car check came back as doblo cargo sx jtd 85bhp but cant seem to find anything about an 85bhp model really and to be fair it feels very quick for 85bhp also how are the differnt hp levels reached is it just through thw map the van is running or are there any physical differences and hiw do i id what engine mine is for deffinate as these car check sites a renowned for in accurate info sorry abit lpng winded but dont want to waste any money on wrong product etc etc

If you put your VIN into ePER (on the blue bar above) it will give you information about your car and engine.

It says its a *M301 1.9 jtd cf3 105 bhp engine so thats good now any recomendations on the best tuning box available (best proven gains) or a decent mapper in the northampton area thanks