It should be right where the yellow strip is that is why the strip is there, 10psi is less than stock (it should be 12psi) 10psi is waste gate pressure so i'd say the solenoid has the hoses the wrong way round or not plugged in properbly or is buggered
just picked up a set of toyo proxe tq for drags and on first outing they went awsone beating my pb on advan 048s on the second pass (while still scuffing them) by .5 second.
just a guess, but on my gtr i was told that the box under the parcel self (other than the 4wd-hicas control) is a 2 speed fuel pump controller which changes the voltage to the pump
I had number 5 big end go on track day a guy there said he worked with a rally and said the remote filter kit was proble to blame for it it got removed for next engine and never had big end probs again 6 years on
I had the re55s on my gtr and even though i did get defected for them they are actually street legal as they have the DOT ( Department Of Transport ) rating on the tyre and wear indicators and are the right size and wieght rating for the given car.