So I Installed A Boost Guage...

[NateR31]

Hey guys, i think i have a little problem, i have a rb25det shoveld into a R31, its got a 3inch dump and then to the stock rb30e exhust(around 1inch :lol:, im poor, not zorst yet) I connectd the gauge to the piping that goes to the stock boost relay in a R33, now was i right todo this? , i know that the ehuast is really killing the power, but should there be anyreason for it not to boost to 7psi. It stays pretty firm on 5psi, and i dont know whats going on.. Any idea guys? Oh and i have the stock side mount cooler..

thanks

Nate

[RB30-POWER]

I would say the solonoid is wired incorrectly. (Considering its a conversion)

The stock wastegate pressure on RB25 turbo's is 5 psi.

You only get 7 psi when the solonoid gets power and opens by the ecu at 4500rpm and bleeds off a little air to increase boost.

The ecu provides earth to the solonoid, so the other side should be +12V anytime the ignition is on. (This is the part that won't be wired my guess)