does a 2 stroke need...
 

...backpressure? just wondering, im pretty sure it does but is it gonna hurt anything taking pipes off , like a 2stoke motor? probably would make it run lean or something right??this is a banshee btw,just curious.

No. The only result of removing the exhaust system would be excessive noise.

Actually it will run looking at the pistons in the exhaust ports. 2 stroke engines like almost no to negative pressure in the exhaust. Thus the expansion chamber exhaust was born. expanding gasses into a large chamber makes low pressure and helps pull the next exhaust pulse out. 2 Stoke engines with out exhaust are to lould even with cotton in your ears and helmet on.