What do peoples ACT guages read?

The reason i ask is since i have rebuit me engine (to the same spec it was before) my ACT readings have increased. Before the rebuild i would normally get a maximum of 30deg when on boost for long periods on the motorway. Now when i come on boost the ACT readings increase very quickly and are soon in the high 40s

The only thing i have done is to relocate the charge cooler reservoir to near the air filter as i fitted a strut brace (see pic).....

This ment shortning the feed and return pipes to the reservoir therefore slightly reducing the water capacity of the system.

I am using a R&B Motorsport ACT guage and a Pace charge cooler.

Any ideas?