i would use oil temp as you when you have oil temp & water temp you realise the oil takes longer to warm up on first start of the day, so you are probably giving your car boost when oil temp is not up to scratch, so is missing parts of engine. Either way i have Oil temp, Oil pressure, Fuel pressure, water temp, boost and soon getting EGT & wideband. When i know it is running sweet i can start tuning it.
Thanks John
if all of that or part of that is bo**ox then let me know as that is my perspective.