I'm very new at tuning computers on cars. What is the best way to tune a 91? Ive read about tweecer and not even sure if I can use on a 91 and ive seen the act bank eliminator chips. What's the most User friendly and effiecent way that ill be able to tweek as I and parts and what not. I am lost with this type of stuff but will catch on quick. Thanks forn any help.