Just installed my Defi D gauge in my IX with 1025 Miles... the weird thing is that boost spikes to 21 psi but then drops to 16 psi then back to 18 then 16 as aproaching the redline...in 1st and 2nd gear ... third holds about 17-18 psi and finally fifth holds a steady 19 psi..

Coming from the Subaru world my boost on the Rex used to hold rather steady...then again it wasnt pushing 20 psi