Thanks mate appreciate the reply, somethings up with mine starts making boost at 1500-1600 rpm, mine is untuned as well. I set the pump timing to 0.7mm as instructed with a dial guage but havent adjusted anything else. Has all the supporting mods 4 inch snorkel, cross country intercooler etc Thought it would still be decent without a proper tune as there is nobody up here in the Pilbara that I would trust to tune a compensated pump. Obviously not... unless there is something else wrong. But engine runs perfect and cant think of anything else.Here I go,
Yes I have that combo and all the go fast supporting mods.
Boost starts at 1000, 1-2 psi
Under sustained load I have 15psi at 1500 and 20 ish by 1700 and 24 by 1900. The beach is a great test, load it up and listen to that sweet sweet boost happening nice and low!!
Blasting through the gears it's about 10psi at 1500 and 24 at 2100 as it's not working as hard and it's wroking through the rpm quicker then what I can read.
Untuned set up, with 33's 3.9 diffs and about 3.3 tonne worth of truck returning 13.5-15.5l/100
I recently increased the off boost fuel 1 turn and it has changed drive ability quite nicely in lower boost cruising!! Only a small puff of the good stuff when applying heavier pedal.