Yes, I did take Dennis Richey's engine out because of problems. I did in fact put a X-12 in my car, guess what? That engine ended up blowing the front seal out in the last qualifier and I didn't catch it. I ran the fastest Master's lap of the weekend on the clock but did not finish the last qualifier because of running out of fuel. Do to the seal failing. Consequently in the main I kept running out of fuel at the 4 minute mark do to seal failure and possibly costing me the win! Prior to replacing Dennis Richey's engine the engine was absolutely awesome when it was running. Reminder that this engine was still in the prototype stages at that time. If the engine did not have these problems that Dennis has enlightened everyone on I would have not even thought about taking it out. Dennis is one of many of the best engine modifiers out there and when this engine goes in to production, believe me it will be one of the most powerful engines around. Give him some credit for testing and testing prior to releasing of this engine.