Do you have to let your engine warm up?

[Cupooterluvr]

WTF are talking about? A hole in it?

No, a gap where the engine block meets the cooling head...:whack::hammer:

I'm not that new that I don't know what the exhaust is lol

 

[Candyman]

Bottom line. The engines will run better when they're warm. You'll have to be over 200F before that starts happening. Any cooler and you'll get incomplete, inefficient combustion. The engine will bog and possibly stall. So you will need to get some heat into it before you can run it hard. Remember, you tune your engine when it's at running temp, so you can't expect it to run ideally until you get to that temp.