I was reading it in a Import Tuner magazine. They used three different regular oils and changed the filter three times and did the same with 3 kinds of synthetic and the average gain with synthetic was 2-3 HP. it's not much but hell I'll take it.:)
Let me know if you set a date up I can meet you over there and shoot some s*** and I can show you some local food joints why you wait if you want. Who knows I may try and have some work done on my car then if I decide to get the intake manifold.
Check the link in my sig. for Kaspers Korner. I am in South jersey. Kaspers Korner has installed all of my after market parts which are also listed in my sig. All the guys who work there either own race cars or are on a team. Both Tom's are great guys and very informative.