I have an OFNA Hyper 10SC, it worked fine, but now whenever I put the body on, the engine turns off. It will idle fine and accelerate and deaccelerate with the body off, but once it is on, it stops. I have tried everything, factory defaults, 2 new glow plugs, there is a large ventilation hole in the windshield, but it still doesn't work.
Please help!!!

Perhaps the body is hitting somewhere? Have you made any changes to to way things are routed under the body? Perhaps its kinking a fuel line or pressing on your carb?

I have a hyper 7 and i had the same problem. the body was pinching the fuel line on mine.

I will have to double check, although with it being a shortcourse, the body covers the entire truck, not just one section. Also, wouldn't that kill it at idle, not just when power is applied?
Thanks
(sorry if I came off the wrong way, just very annoyed with the truck)

Rechecked the body, nothing is touching. Also forgot to mention I also replaced the fuel line.

is the body clearing the pipe? easy to overlook but it might be blocking the pipe causing it to die. if that's not it, i have no clue.

If its not blocking the pipe, pinching any fuel line, pinching or blocking the air filter, then it almost has to be overheating.

We need more info. Does it die as soon as you nail it with the body on? Does it idle fine? Does it run fine for a few minute and then die?

question do you have a vent hole in the rear window so the air passes over the engine head, and air filter? (only see you mention the front window)

Can you take some clear pictures with body off and on and post them for us to take a look?