^^^^not true^^^^ you dont need a Air to fuel ratio gauge if you have a EGT gauge. it is nice to have but not necessary. personally i tell people not to get a boost gauge.

if you are planning on gfetting 3 gauges look at spending at least 600 bucks. 3 gauges pod and install. if you are spending this much and you dont have a EBC. dont buy gauges. but if you are planning on spreading your mods out and just need something to read boost. get a mech boost gauge. if you are planning on doing the best set up that will be the most acurate. Eletric full sweep gauges are the way to go. you will be looking at around 200 bucks each for good ones. i know Gruppe-s has a 3 gauge+pod deal for like 750. i went with the HUGE 67mm Autometers in my car. EGT, Oil Temp, Fuel pressure. i will be adding 2 more some day probly water temp and a voltmeter.

Cliff notes.

no EBC dont buy gauges
Eletric over mech
dont get a A/R gauge