I never touched the n75 when fitting the gauge, but will check to see if something is wrong.
n75 off for a boost gauge ??
is your dv fluttering or anything
May be worth re-seating the connector, as it may have been nudged while doing the work ??
Like I said, I got very similar symptoms. It's a starting point
What sort of vac hose did you use? When I was checking everything worked before running the hose thru the bulk head I used the stuck that came with the gauge, and that collapsed, and caused a false read...??
I used the standard clear 3mm vac hose that came with the kit, i cable tied the feed in the engine bay, maybe ive over tightened and its causing a crushed point, would that effect the reading.
main place i'd check it where it comes through the bulkhead; just incase it has snagged something.
What tube are you all using then? Just ordered myself a boost guage and hope to fit it at weekend
I would have thought the clear platic tube would have been quite good as its not soft like silicon so less likely to kink up?
Also where did you take the feed for the illumination from?
Sorry to go a bit off topic...
Just ordered myself some more silicone hosing, will fit that as soon as it arrives, just gotta make the hole bigger through the bulkhead, thats going to be fun, i bet when i remove the old one that the leak if there is one is from there.
You could leave the clear plastic pipe from the guage to the engine bay and put an inline connector as close to the bulk head as possible.No heat issues in this area of the engine bay