I tuned my engine to stage 2 a month or two ago, and since then my engine has been overheating. At first the engine just needed more coolant, but that's not the case anymore. I'm not 100% sure the stage 2 tune is what's causing the problem, but it's my best guess. Anybody else have a similar problem before?
"Obsidian" makes me think '04/'05 MY, at which case, it can be a whole bunch of things. The extra power may have caused a pre-existing issue to get worse or show itself, but if you are running the proper tune for your modifications, that is not what's causing your car to overheat.
The car is an 05 wrx, ~240k miles. Modifications: uppipe, downpipe, catback, short ram intake, stage 2 tune, i have oil pressure, air/fuel, and boost gauges. And the engine was rebuilt before I bought it, maybe 10k miles ago, i forget.
My air/fuel ratio is looking good, so running lean probably isn't a problem.
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