Apexi N1 rattle

[AbeTypeR]

Those of you who have installed the Apexi N1, what did you do to prevent or fix the exhaust flap rattle? I'm gathering info to try to solve it tomorrow.

• I reset the actuator before installing on the Apexi exhaust.

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[Motpeds]

The only way I have gotten the rattle to go away is to pull the active valve fuse so the flap is stuck in the "open" position.

I've been running it this way with no rattle for weeks and today i decided to re-activate it and the rattle is back. What a shame.

Has anyone from Apexi commented on this issue?

 

[TW00Si]

Oh great. My Apexi exhaust should be arriving in a week or so. The whole point of getting an exhaust with the valve is so the volume can be controlled when my family is in the car.

 

[AbeTypeR]

The only way I have gotten the rattle to go away is to pull the active valve fuse so the flap is stuck in the "open" position.

I've been running it this way with no rattle for weeks and today i decided to re-activate it and the rattle is back. What a shame.

Has anyone from Apexi commented on this issue?

I got an email from them with some troubleshooting instructions. Additionally I've reached out to a few owners and I'm getting mixed answers. Some say the only way to get rid of the rattle is to leave the flap open. Others have given me ideas to try.

Will be trying to fix it this coming week.

 

[AbeTypeR]

Oh great. My Apexi exhaust should be arriving in a week or so. The whole point of getting an exhaust with the valve is so the volume can be controlled when my family is in the car.

It is definitely louder than any videos you might have seen on it. But it is not unbearable. The drone sound only happens between 3k and 4k RPM

 

[AbeTypeR]

The only way I have gotten the rattle to go away is to pull the active valve fuse so the flap is stuck in the "open" position.

I've been running it this way with no rattle for weeks and today i decided to re-activate it and the rattle is back. What a shame.

Has anyone from Apexi commented on this issue?

I was able to solve it. Trying to figure out how to put it in words since I didn't get to record the process. I'll try to in a bit

 

[AbeTypeR]

Oh great. My Apexi exhaust should be arriving in a week or so. The whole point of getting an exhaust with the valve is so the volume can be controlled when my family is in the car.

When you get yours feel free to reach out. I fixed my rattle

 

[TW00Si]

When you get yours feel free to reach out. I fixes my rattle

Thank you. I’m supposed to get the exhaust Friday but won’t get it installed until my downpipe comes in and that’s another 3 weeks out.

 

[Elusiveautoco]

I was able to solve it. Trying to figure out how to put it in words since I didn't get to record the process. I'll try to in a bit

How did you end up solving this. Have the same issue with mine

 

[TW00Si]

Please share here. I’ve yet to experience it but I’m sure I will in due time.

 

[AbeTypeR]

How did you end up solving this. Have the same issue with mine

The key to this process is to ensure that the spring is set in such a way that it creates pressure against the exhaust valve. However, this pressure should not be directed downward; instead, it should be applied so that you need to move the actuator slightly counterclockwise while pressing against the valve to align the bolts properly.

During this process, you might need to "reset" the actuator several times or even more, as it tends to rotate a few degrees each time you reset it.

In the videos I’ve watched, they only reset the actuator once and then proceed with installation without giving proper attention to the fact that there needs to be some spring pressure keeping the valve shut. Make sure to maintain this pressure to ensure a proper installation

Feel free to comment or DM if you have any questions.

TLDR; Reset the actuator a few times until it sits at an angle that allows the spring creates pressure to keep exhaust valve closed.

 

[FL5Frank]

How do you reset the actuator

so technically installed wrong by my shop

 

[Wheats027]

Adding to this:

I also have the Apexi exhaust. I set the valve motor with pretension in the closed position. I still experienced some of the rattle even with the pretension.
I have now installed a generic throttle return spring to the outside of the exhaust to help offset some more tension. I just looked at the rotation movement and found a strategic position for the throttle return spring to hook onto the rotating assembly. The spring is not heavy duty enough to stop the motor from functioning properly. This immediately stopped the exhaust rattle.

I've been riding around for a few weeks with no issue.

Will update if I ever run into issues such as the spring breaking or the motor prematurely wearing out. However, I don't think I see either of those things happening. We'll see...

 

[Motpeds]

Adding to this:

I also have the Apexi exhaust. I set the valve motor with pretension in the closed position. I still experienced some of the rattle even with the pretension.
I have now installed a generic throttle return spring to the outside of the exhaust to help offset some more tension. I just looked at the rotation movement and found a strategic position for the throttle return spring to hook onto the rotating assembly. The spring is not heavy duty enough to stop the motor from functioning properly. This immediately stopped the exhaust rattle.

I've been riding around for a few weeks with no issue.

Will update if I ever run into issues such as the spring breaking or the motor prematurely wearing out. However, I don't think I see either of those things happening. We'll see...

got some photos you could share?

 

[Wheats027]

got some photos you could share?

I'll try to slip under there and get some later. Should of preemptively thought about that.

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