Si - for what it's worth - depending on your ECU and mapper - why not look into the Bosch 3.5 bar TMAP sensors?

They need two holes drilling into the plenum - one for the O-ring to seal in and one for a bolt to secure it. Acts as a MAP sensor for 2.5 bar of boost and an air temp sensor and they're fairly small - not much bigger than a normal YB ACT sensor.

Saves worrying about vacuum piping splitting etc and the sensors with a plug kit etc. are about £75. Same price as a YB 3 bar!