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What I have to say maybe Hard to take but true.....

I've been through this 4 yrs ago when the dealer installed my
Rush.

Here's the short and sweet of it.

If U didn't have decell popping before the pipes and now have it,, then U didn't get the Rush mufflers sealed correctly (AIR LEAKS) Where they slip on the header pipes... PERIOD........

Also U tried to go the cheap way with the Stg1 (intake and pipes) and only do a download.

A download is a one shot deal, either its OK or it Sucks for Ur bike.

I don't understand why someone buys a HD and then want More everything in the motor area thinking they can do it on the cheap and get good results...


Bottom line....

Reseal the mufflers for air leaks, Check by pulling the baffles out, then look into the pipes from the rear where they slip on the headers while putting a light on the muffer/header area to see if U can see any light from the inside.
If so U have a air leak and will have decell popping..

Then get a decent F/M system and a dyno tune to get her running right

 

Did I hear you say an air leak is the cause, or is it the flow/reversion of muffs?

 

Not trying on the cheap. I went by what I read in this forum. If I put on heavy breather, no need for remap. BUT if I have heavy breather AND new mufflers then remap or at least download stage 1. So I have stage one. I will check for air leaks.
If I dont find any then I will try to do research on self tuning/mapping. If I dont feel confident in that area, I will have it dyno tuned.

 

I run hi flow intake with 2000 CVO RG slipons and Dobeck performance electronic jet kit for FI. Had decel popping until I found cracked y-pipe, replaced with true duals and no more popping. Check your exhaust for air leaks as others have said.

 

I have rush slip on's. In my pitch black garage, put high power flash light beam in end of exhaust.
No light escaping from anywhere on either exhaust

 

If the bike runs good and all you have is some "not loud" decel pop, I'm not sure how important it would be to get rid of it, considering the cost of a unit and a custom tune. However, the bike will run it's very best afterwards.

As far as leaks,..... look for black or tan residue where the slips hit the headpipe, and where the headpipe hits the cylinder head.

Decel pop is not uncommon once you go to less restrictive pipes. Tuning can get rid of it in most cases.

 

Finally, some sanity. A good answer to the never ending hand wringing about decel popping.

 

Not ringing my hands...it was just a "i wanna know" question.
I appreciate all the post. The more I read the more enlightened I become.

 

Want more everything? Sheesh! We're only talkin' A/C and pipes, not a motor rebuild!

While an air leak will cause decel popping, so will many other factors. Especially when you take away back pressure.

EASILY can be the latter.

 

Decel pop happens during decel right? Where is your throttle during decel?
Throttle is closed. Correct? That's called "zero throttle position". That is where the tuner richens it up to drown out the fuel to keep it from igniting (some tuners lean it there).

So here's my next question:

Who gives a flyin' *** if they run rich in zero throt position?
How much fuel can you possible burn at that rpm?????

Detune? My ***!

I lost ZERO hp/tq, I lost ZERO ridability,..... when I tuned out my decel pop.

Why? Because I don't ride with the throttle closed. He he!