Hi, im new here but have had a few imprezas. Last week I per based a mint almost standard 1998 wrx saloon. It drives really well and pulls like a train, however it has some strange temperature issues. When im driving around town at 2-3m revs, say 30-50mph, the car can start to overheat, this doesn't always hapen. But when it does, it never goes into the red, and as soon as I give her some boost and a little thrashing the car cools back down to half way and stays there a while. Seems like poor cerculation? Maybe thermostat or water pump? Any help or info highly apreciated! Thanks!