Stock boost psi and vacuum inHg?
#1
Stock boost psi and vacuum inHg?
I know I've seen it before but can't seem to find it anywhere now. Does anyone know what the stock (non-chipped) levels are supposed to be for max boost pressure and idling manifold vacuum? I just installed my boost gauge and would like to be able to use it.
Also, how much does a chip increase the boost pressure? (primarily GIAC) Does a chip change the manifold vacuum at all?
Also, how much does a chip increase the boost pressure? (primarily GIAC) Does a chip change the manifold vacuum at all?
#5
Mine sits at 19 psi warmed up with a/c on, and 20 without a/c, lol.
I took it for a test drive and in 3rd, 4th, and 5th gear at WOT it got to around 18 psi before dropping, although it did peak at 21 psi a couple of times. I'm guessing I have a mystery chip too. Is there any other explanation?
I took it for a test drive and in 3rd, 4th, and 5th gear at WOT it got to around 18 psi before dropping, although it did peak at 21 psi a couple of times. I'm guessing I have a mystery chip too. Is there any other explanation?
#10
If you are seeing 18psi and up to 21psi in 3rd/4th/5th gear then you most likely have a GIAC Xchip flash which was/is one of the more common flash tunes for the 2001.