so i bought my mk3 about 2 weeks ago. and this just started today. i noticed a slight leak under the car and the previous owner said there was a bad oil cooler line so i was like "oh ok swapbop ill just replace that". well today i crawl under bc i started loosing power in 3rd so when i crawled under i saw the 2 lines that need replacing. after that i decided to go show my friend what i was talking about when on the way there to turbo sounded dry. so we went ride. boost was spooled to 11lbs and then when i got off all my lights came on inside of my car. then at idle coasting along the rpm's rose to 1k then dropped down to about 400 repetitively then calmed down after awhile. help help