So I have a 2000 Civic Si with the b16 motor in it and it has about 91k on it, a friend of mine is selling a cheap b16 JRSC in good condition and I'm very tempted to purchase this from him. My only concern is that my engine is completely stock except for a short ram CAI. He said it runs either 7 or 9 psi with the pulleys, will this harm my engine? It's either this or simply build up my block with an N/A setup, however I can't afford too much at this moment.

Any suggestions?