check your ECU for codes. depending on what gas you put in you have to use the timing on the 240's or else it might run rough.. also like i said just check the ECU retard timing plus if your hearing a tick might wanna check out your knock sensor, it might be retarding your timing also.. reset ecu, turn on car for like 1 - 3 minutes without touching anything so the ECU can check the ECU for errors.