Check the PCP rifles at: http://www.pyramydair.com/cgi-bin/show.pl?cmd_category=show&category_id=2 New ones come out every so often. PCP's will have the highest PSI of all air rifles. They use a Scuba tank to charge them.
5-10 psi
i hear with a propper tune with a stock turbo on a 2.5 sti the highest safe boost is 23 psi
The stock tires are usually 35 psi
35 psi with stock turbo or 49 psi with stock head gasket.
There is no legal limit for PSI for and Air Rifle. Many PCP Air Rifles Have extremely high PSI's and are charged with a scuba tank for mutable shots without a recharge. About Modified: Without taking the rifle apart and knowing what to look for it is unlikely that you will notice any change unless it is obvious from the outside.
between 7-8psi.
While it's very changeable via tuning and physical modifications, I believe the stock WRX is 7-8 psi, and the stock STi is 14 psi. To get really into it, an Eaton M62 supercharger installed with stock pulleys is usually between 2-5 psi, and an Eaton M90 installed with stock pulleys will net 7-9 psi (just incase you're cool enough to try going the route of supercharging)
The stock fuel pressure for a 1997 Mitsubishi GST is 38 psi. Stock injectors are rated at 43 PSI but anything lower should lead to have the fueling system of the car inspected.
It is 11.9:1.
30.0 psi
14.7 psi
45 psi cold &20 psi hot