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My 800 classic wants to cough/stall have not rejet carb since cobra exhaust installed but did since I owned from 400 mile bought used/like new also coughed with stock exhaust runs great otherwise,realy need to watch when cold very cold blooded
What do your plugs look like? where is it coughing at.. rpm, when you try to drop the hammer to sh*t and get or just running around town?What do your plugs look like? where is it coughing at.. rpm, when you try to drop the hammer to sh*t and get or just running around town?
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yes buddy you do technically when an after market exhaust is installed your ment to rejet the carb anyway its very simple to do just take the bowl off the carb and in the middle is the main jet you simply unscrew this and put the new one in but you have to find out what size jet you have in there now and go to the next size up say its a 140 you will go to a 150 etc buddy this picture will help you
No it will not. You probably don't NEED to rejet at all. If the manufacturer suggests it for your bike and pipe combination I would follow their advice. If they do not suggest it I would use a dyno to get the best performance from your new setup. Keep in mine your new exhaust only lowers the back pressure. You haven't changed the intake parameters at all as far as airflow. So any additional air going into the cylinders due to your new exhaust will only be because of the reduced volume in the cylinder while the intake valve is open. This is a rather small amount, so don't get all crazy and jump several jet sizes at once.
when you installe new pipes you lost some back pressure this means you engine is now breathing better and so you need to adjust your carbs by rejetting to a richer jet.
I replied...Then he went on to tell me I have to get the bike rejetted...On cars you only rejet carberators...How do I rejet/configure my bike if I decide to get exhaust and intake?
on a fuel injected bike you get a fuel mapper (kinda like putting a chip in a car) cobra makes a decent one that's reasonably priced. it changes the parameters in your ecu to accomodate the pipes and intake,
I replied...Then he went on to tell me I have to get the bike rejetted...On cars you only rejet carberators...How do I rejet/configure my bike if I decide to get exhaust and intake?
on a fuel injected bike you get a fuel mapper (kinda like putting a chip in a car) cobra makes a decent one that's reasonably priced. it changes the parameters in your ecu to accomodate the pipes and intake,
What do your plugs look like? where is it coughing at.. rpm, when you try to drop the hammer to sh*t and get or just running around town?
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