Remap, stage 1 or do nothing

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May 1, 2011 | 10:08 PM

WNMORE

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Joined: Feb 2010

Posts: 79

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From: New Jersey

Remap, stage 1 or do nothing

I have a 103" engine with the CAT. My dealer told me if I put on a set of slip-ons alone, I will not need any other modifications. So, I put on a set of RC Components slip-ons. The looks and sound are great and the bike runs fine. Nothing else has been done to the exhaust or fuel management.
My question is: When decelerating while I do not hear any "popping" or backfiring, when the rpms fall from 3,000+/- I hear a bit of a rumble at around 2,000 rpms that I do not hear while decelerating through the 3,000 to 2,000 range or at any other rpms. Sometimes the same thing when I rev the engine, but never that "pop-pop" or backfire sound. Does this sound normal, or should I consider a remap, stage 1 or nothing? I am happy with the way the bike runs and am not looking for more performance. And surprisingly, the bike does not run too hot as many have reported here.
Thanks in advance.

May 2, 2011 | 05:22 AM

dawg

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Joined: Jun 2006

Posts: 28,552

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From: Vermont

Normal, you don't need a remap with slips only.

May 2, 2011 | 05:54 AM

shari

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Joined: Jul 2007

Posts: 67

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From: United Kingdom

I have the same "rumble" on my 103 and I have slip ons, high flow air filter and a tuner

May 2, 2011 | 06:40 AM

Notgrownup

Seasoned HDF Member

Joined: Mar 2009

Posts: 24,728

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From: Snow Hill, NC

These machines makes some funky sounds sometimes and after a while you get use to them...Have fun with the sounds, be one with the sounds, they will grow on you....

May 2, 2011 | 06:47 AM

VETERAN75

Road Warrior

Joined: Nov 2009

Posts: 1,444

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From: SC

The rumble is the one you want, the decel pop is unburned fuel getting to the exhaust then burning. No map required the ecm can accommodate a slip on change.

May 2, 2011 | 07:43 AM

jjnoble

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Joined: Jul 2010

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Normal....You are fine.

May 2, 2011 | 08:21 AM

dohadex

Road Captain

Joined: Sep 2009

Posts: 718

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From: Panama City, FL

The rumbling/decel popping is normal. If you went with a Power Commander, you can richen up the map in certain areas to decrease that to almost nothing.
I richened the 0% cells from 4000 rpm down to 1500 rpm. Popping is gone.

The Power Comander is really a neat tool when you figure out how to map it correctly. I'm still learning.

Good luck!