engine surges after H-pipe install

is it necessary to retune the carb after an h pipe install, the engine has become very unstable at idle and will surge up and down from say 600 rpm to around ~1300 and will even die if left be this engine ran perfectly without the pipes installed...... just tell me if you need more info on my combo if it will help answer the question thanks in advance
Author: admin

engine surges after H-pipe install

is it necessary to retune the carb after an h pipe install, the engine has become very unstable at idle and will surge up and down from say 600 rpm to around ~1300 and will even die if left be this engine ran perfectly without the pipes installed...... just tell me if you need more info on my combo if it will help answer the question thanks in advance
Author: admin