Aquamist HFS-3 and MINI Tank GB

[Mutant_Tractor]

I have fully installed my system at last

Problem is... when the pump activates it sounds like a large compressor running in the back of the car and is VERY noticeable, is this normal?
I'll record if anyone needs to hear but it definitely sounds wrong, jet pattern etc looks good, no leaks, all is working great thanks to Jeff - unreal service!

If I can get this sorted then i'm good,

I need to work out my jet size, I have 330cc injectors at the moment (early JCW) and my brother has 380cc (later JCW) if I work out the flow rate and boost pressure and compare it against the chart on Jeff's site then I get (100% water for the moment):

inj size * 4 total * 100% water total * losses total flow
330 * 4 = 1320 * 0.10 = 132 * 1.1 = 145.2
330 * 4 = 1320 * 0.15 = 198 * 1.1 = 217.8

217.8cc flow for the 330cc injectors with 13-15psi boost is a 0.4mm injector, I thought the smallest an R53 would need is 0.6mm?

For the 380cc injectors it works out as 250.8cc = 0.5mm jet...

Am I doing something wrong here?