yea they slowed it down, it is alot more violent in real time and a diesel is even more wicked. The used a cylinder bore scope actually pretty cheap now, you can get I believe an 18" or 24" scope for about $350 from snap-on, and for you pervs it works great under doors and around corners. But seriously it saves alot of time not tearing shit down for internals. Will work any where you can get it in jus becarefull BECAUSE OBJECTS ARE MUCH CLOSER THAN THEY APPEAR, one guy stuck his to close and got cut in half, he bought his when they first came out and as you can imagine they did not warranty it but did give him a better deal. It was the funniest thing in the world a 55 year guy looked like a little kid who just flushed his dads wallet down the toilet.