During the high speed boat chase, the camera helicopter's landing skid comes briefly into view as the camera is following the bad guys' boat. It's visible in the bottom right corner, and is very noticeable.

During the high speed boat chase, MacGyver picks up some petrol (gas) cans with "BENZIN" written on them in english. The scene is set in Russia, so the writting should have been in Russian.

After MacGyver helps Alexander Karsov escape the more secure cell-block and takes him back to the less secure patient dormitory, there is a scene where he plans to distract the male nurse in order to smuggle Karsov into the room. Watch when MacGyver says: "Come, I'll show you the open gate"; there is a fast moving, but clearly visible, shadow high on the room's wall, right behind where MacGyver is standing, and judging by its shape it is a microphone

This is a fairly minor nit pick, but still, I must.

When Mac and Pete are in the asylum running around, the signs on doors written in Russian are misspelled. I mean, you can still understand what they say, but it's funny in the same way as Chinese menu bloopers of the "Government Abuse Chicken" and "Corrugated Iron Beef" variety.

When the camera zooms the boat at the chase we see that Mac's have brown/black diamond pattern shirt and black hair plus different hair style, but when he do Macgyverisms then he have red/black pattern shirt. So I'm pretty sure, these boat chase scenes were took from some another movie.

It'll be from James Bond: Live and Let Die which is where that boat scene is ripped off from.

No, it's not from James Bond

Yeah your right. The idea for the scene is from Bond, but certainly not the footage.

I just watched the scene again and I think they are just stunt doubles. The boats are identical in all shots as is the quality of the picture as well as the scenery/location which all points towards a really bad choice of stunt doubles for the shoot.

Maybe that's why they seem to focus more on the chase boat in the wide shots. So we don't notice who's in the MacGyver boat.