First off, I have always used SCT and JMS for my dyno tuning but I notice that a lot of you speak of Diablo. What type of gains have you seen with the Diablo? JMS says I should expect 20 hp gain with a custom tune. Who makes the best camshafts for these engines? Is the crankshaft not forged? IMO the car needs a louder exhaust and more camshaft.