engine power

chocobuddy

New Member
had a local mechanic tell me that the 250cc engines power is requlated by the size of the exhaust outlet. What would happen if I increased that outlet pipe from the 1/2 in it is too say a 1" outlet?
 

HotRodCarts

Cartaholic
Unless you plan on redoing the entire exhaust with a expansion chamber I'd leave the exhaust alone. The 2 strokers need the back pressure.
 
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