[al lkosmal]

The 2.7RS is a great build and lots of fun....they make decent power and spool up nicely. I typically use 40mm ITBs for that engine configuration....and they work very well.

I expect that you could install the 46s and use the ECU to tune them up to work with your 2.7....but you would likely sacrifice smooth tip-in and low RPM torque/throttle response.....but come alive in the upper RPMs....
That, combined with the S-cams might make it ok for a track with long straights, but no fun around town or as a canyon carver....so basically sacrificing what makes that configuration so much fun.

The 46mm PMOs are really nice ITBs, but I wouldn't apply them to the 2.7RS and would save them for a hot 3.2 or a 3.6.

regards,
al