On hills its hopeless (got it in christchurch so didn't do a hill test) my mates R50 shape 96 2.7TD auto terrano and I don't think that's got the intercooler? would eat it, actually my shit box daihatsu tugger would eat it

I will get it checked out by a diesel mechanic, will blocking off the EGR valve and fitting a catch can improve performance? What else should I be looking at.
Are these things heavier and therefore more gutless than an R50 shape 2.7 turbo auto terrano?