I was wondering how many boosted people are using an oil cooler? I was planning on using one but do I really need it? What are your thoughts on them??? thanks

depending on how hot your engine and turbo get, you may or may not need one. get an oil temperature gauge, and if your oil is running constantly hot, you could go for a cooler. i don't recommend just getting one, if your oil is already cool enough, cooling it further could lead to a viscosity that you didn't plan on, causing you to lose engine efficiency.