minor fetteling :- de bumping the TB and tidying round gaskets but nothing involveing head off. to be fair you have done more reserch into it than i chould be arsed to do. mines jumped towards the ITB route whitch i'll play with for a bit but some form of boost is calling again.
we both have dyno plots, there from diffrent dynos tho. i have dyno plots showing 170 up on this forum from what i would think is an unbiased rolling road as they din't do any work on it. but all roller are diffrent end off. thats one of the reasons i plan to get my own at some point, they arn't exactly that expensive for what they can do for you.
180 was based on what i have printouts of it doing and the form it was in at that point. any whats this about haveign to send off for remaping and stuff. digi 3 isn't exactly complicated, switch noggin on and do it yourself all you need is a computer some cracked software and eeprom burner a bit like this that you can buy off ebay for naff all

of course takeig the chip in and old gets a bit old after about an hours so built an emulator for the 27c256 chip so i chould do live mapping off the laptop without haveing to take anything apart. it is also possible to use digi 3.2 with long duration cams, just because it has a map sensor dosent mean it has to use it, you can tell it to go off TPS / RPM if you can be arsed but that needs a bit more kit and more thinking