Hmmm... yes it would decrease and increase. But take it from the front.
- Fuel pump = 10
- Fuel regulator - 5
- Fuel rail = 5
Decrease 5
- Fuel pump = 10
- Fuel rail = 5
- Fuel regulator + 5
- Fuel rail = 10
Increase 5
Haiyaaaa... my maths damn lousy one. Wish i had sifoo chins engineering calculation skills. hahaha. Either way we are not wrong. But unless your fuel pump is upgraded to higher pump capacity, the fuel regulator is basically a water faucet . hahaha.
Then again i'm sure there are people gonna bomb me for that. They would put down high pressure water hose jet and normal tap water hose jet. Then comes some fella say if got 100 bar BOSCH water pump then the story different liao. Then comes another bloke say if you didn't install a high pressure capable water spray jet nozzle you think you could remove mould from the wall meh? Then comes another uncle auto mechanic, "You guys talking about fuel pressure or water pressure? We old school mechanic use only 6,7,8mm fuel hose to control pressure only. Whats so hard?"
There goes my day..... hahaha. Me newbie la. I NATO one.