Stryker with Cobra Swept Exhaust and Cobra Fi2000

[Yamaha]

I recently purchased the Cobra Swept exhaust and the Cobra Fi2000 Fuel Management System for my 2011 Yamaha Stryker. I had a Yamaha dealership close to home do the install.....but I do have a concern.....

I noticed now that I get some backfire or popping when I let off of the throttle on 1st, 2nd, and 3rd gear. I read the manual that came with the Fi2000 and saw that the default settings for the Stryker with a full Cobra exhaust are: (green led pod at 2, the yellow led pod at 5, and the red led pod at 5) in other words 2-5-5. I looked at the settings now and the dealership set them as 6-5-5....but again I still have some popping when I let off the throttle.

If the default settings for the bike with a full exhaust are at 2-5-5 does having it at 6,5,5 mean something else might be wrong?

My question is should I continue to tweak the "green led pod" to try and get rid of the popping? Or should I take it back to where I had it installed?

Obvioulsy I am new to the forum and new to bikes which is why I didn't to the work myself, I do plan on learning and doing most of the work myself in the future and I am sure a forum like this would really help.

Thanks in advance to anyone that reads and has any tips or info for me on this subject.

[Motorcycle Forum]

[slozomby]

have you tried the cobra recommended settings of 2-5-5? it could just be the dealership not bothering to read the manual.

[Yamaha]

Hey slozomby thanks for replying and....

....yes I tried the recommended settings of 2-5-5 this morning and 1st gear was awful. It kept jerking back and forth like it wanted to cut off and popping like crazy. I was on my way to work so I just put it back to the dealership settings of 6-5-5 but still had the backfire or popping when I let off the throttle. I emailed Cobra to see what they have to say but I have not heard back yet.

[slozomby]

have you done anything with the intake? non stock filter or assembly?

[Yamaha]

no everything else is stock, the only thing I have had done is the Cobra Exhaust along with the Cobra Fi2000...which is why I thought the 2-5-5 settings would fix my problem

[VII]

The jerking sounds like a problem but as far as the popping goes... sometimes with aftermarket exhausts it is inevitable. You can minimize it but never totally get rid of it. On my m50 i got i my powercommander on a custom dyno'd map and it still pops every so often in 3rd.

[Jessie6]

I am about to order the FI2000 along with the Cobra Swept exhaust. Im curious to hear from others how the bike sounds with this set up?