i bought my 02 scoobie wrx about 2 months ago & it already came with a apexi turbo pen timer already installed. from what i can see, my car has the stock turbo. i usually leave the timer on for a few seconds if i only drive short distances. but when i drive further i have it set for 60sec. do i really need this turbo timer? if so, how many seconds should i leave set for? any info will be greatly appreciated! thanx!