Hey guys I bought a 08 WRX a month ago and it ran fine till a week ago. Last week it started feeling like i was hitting a rev limiter @ 4500 RPM I am new to subarus and Turbo cars so im stuck and i have no idea where to start diagnosing the problem
I haven't run into it personally but i understand that is is not uncommon for the silicone hose that connects the inter-cooler to the intake manifold can crack or pop off all together. in that case your ECU would be adding fuel because the turbo is pulling extra air through the MAF but that compressed air would be escaping before the intake manifold.
i dont have any photos lying around but this would be the part
i had a vac hose fail and crack that was near the turbo, cause a similar kind of thing to happen to me. it was a small crack on the underside of the hose and i couldn't figure it out for weeks.
finally went around car squeezing all hoses and finally found one above turbo that had failed. soon as i replaced it car went back to being awesome!