I just bought a 2005 suzuki boulivard C-90. It has "Hard Krome" brand exhaust on it. Sounds good and runs good. But there is some poping on decceleration. ( the popping does not bother me if it's not hurting anything. I don't know if the fuel control module has been replaced. Will running stock controller with aftermarket pipes damage engine components? Such as exhaust valves?
2006-12-07 18:37:42 · 11 answers · asked by Anonymous in Cars & Transportation ➔ Motorcycles
The simple answer is no.
it also depends on the bike ( carb or FI )
On a FI system the computer will adjust as necessary to compensate for the free flow.
On bikes with carbs rejetting will make it run better, no flat spots in torque, but not required.
-N
2006-12-07 19:36:06 · answer #1 · answered by narbo73 2 · 0⤊ 0⤋
Popping on deceleration is actually a lean condition (almost without exception), and this can damage your bike.
Also almost without exception, stock motorcycles are set up from the factory to meet strict emissions standards and are strangulated on both ends (intake and exhaust). MOST of the time (but by no means all), you should be able to install a reasonably good pipe and a K&N filter without having to rejet or remap. I would check to ensure that the pipe is installed correctly with no leaks or gaps anywhere - a poor fit at the head or the muffler/header junction can suck air and cause popping.
If everything has been installed correctly, I would consider having it remapped. You can buy an aftermarket Power Commander for just a bit more than it would cost you to have the factory map it, and then you can change the mapping as often as often as you like. Either way, it's cheaper than a new top end.
2006-12-08 02:46:39 · answer #2 · answered by fz1goddess 1 · 1⤊ 0⤋
The popping on decel is usually a PAIR valve admitting air into the exhaust loop to help burn off unburned fuel. You can probably find block off plates, or just plug the hose that feeds the valve(s) at the airbox.
The bike is most likely running lean. A fuel control module (assuming the bike is FI and not carb'd) will allow you to make a little more power by correcting your A/F map, but will most likely not add much. At any rate, it won't hurt anything. But it's probably fine just as it is right now.
2006-12-08 04:31:12 · answer #3 · answered by Quagmire 2 · 0⤊ 0⤋
The only answer I have for ya is, check the fuel to air ratio, is it running lean or rich? That could be one of the problems why its pops. The other one is, you pobably have a glasspack for an exhaust, they tend to build up pressure, but this does not hurt the pressure it needs to buil up acceleration. And when you let go of the throttle, it will do the Popping, you described. But any aftermarket exhaust will not hurt the vehicle, its just the muffler you are replacing and you can do this to any type of vehicle, Car, truck, suv, and lawnmower too.
2006-12-11 16:59:03 · answer #4 · answered by genpepper1 1 · 0⤊ 0⤋
The answer is no.
You are losing any performance gains you might have been looking for and it would be easy to purchase a DynoJet Power Commander to get the fuel air mix set properly.
The power commander allows you to download a free map from dynojet that is designed for your bike with your new exhaust system. It will optimize the fuel air mix, smooth out the acceleration, and let you tap any extra HPs the exhaust system you installed might give you.
To learn more you can go here – www.powercommander1.com
It is a site I set up to answers power commander questions.
The DynoJet Part Number for the power commander you need is - 322-411
These run $339.95 retail but never ever pay retail!! Go to the site above for the best deal!
2006-12-08 04:05:39 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Its afterburning as the fuel air mixture is too lean to support normal combustion.
It can damage exhaust valves,pistons and cylinder heads.
Do the pipes have the baffles fitted or is it just loud?
Fit a power commander to fix injection as the maps don't compensate enough for the exhaust (it doesn't have an O2 sensor, open loop system)
Dynojet can either pre-program it for you or you can spend some dyno time to get to exact specs for your situation. It should produce some extra power as well.
2006-12-08 04:48:31 · answer #6 · answered by 1crazypj 5 · 1⤊ 0⤋
Take this as on opportunity to put custom exhaust on the truck. Now yes you do need more than just manifolds. When you shut the truck off, the cool air hits the valves and they'll stretch/warp because they cool too fast. Just run dual straight pipes out the back. No cats, no mufflers, and this'll run you around $100.
2016-05-23 05:53:32 · answer #7 · answered by ? 4 · 0⤊ 0⤋
When you go to an aftermarket exaust the pop comes from a load up of fuel , the fuel needs to be leaned out because of more air flow the fuel isnt burned off.no it wont hurt anything its just unburned fuel
Twister
2006-12-08 11:53:04 · answer #8 · answered by Twister 2 · 0⤊ 1⤋
The reason behind the popping is the fuel. Sounds to be like the bike is carbureted, and it either has an incorrect fuel/air mixture or it is incorrectly jetted.
2006-12-07 21:01:30 · answer #9 · answered by jeff_is_sexy 4 · 0⤊ 0⤋
if u goin to fit a different model exhaust it would be prob popping is always coz of valve wear try using high octane fuel after refitting or else it too would cause damage on underfits of ur exhaust and will result in popping.after market pipes would not drain exhaust completely it wil result im mileage variation
2006-12-08 00:43:25 · answer #10 · answered by mak_on_reach 2 · 0⤊ 2⤋