I'm a new member w/ 2 conquests, an 89 driver & an 88 parts car. My 89 has 70 k on it & I've owned it for 15 years! Mostly stock, (k&n air filter & larger sneakers) I'm ready to start tweaking on it! Where do I start? Is the stock boost gauge accurate? If so, all I can get is 9 psi boost on the gauge. Do I start w/ a new gauge before I go to the next step so I have accurate info? I would like to have a reliable 13 sec car, possible?