Unfortunately, a mechanic left off the vacuum hose to waste gate and over boosted the engine. We now have piston slap. We are considering a 2015 STi used engine E257 with very few miles to replace the original 2008 E257. Question: will the engine harness on the 2015 work with my 2008 car? We do want the engine to work with the gauges and etc. need help? This will help us decide to either buy or not buy the low mileage replacement engine. I appreciate it. New member ACDC.