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The Rocket Science Forum 2300cc's of Propulsion

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Old 09-13-2007, 02:58 PM   #1 (permalink)
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Popping on Decelleration

Hi,

Just had the TORS pipes, CAT Bypass and appropriate tune installed on my 07 Rocket (not a Classic) and it sounds great.

Is a little bit of popping "normal" on decel?

What have you guys experienced?

Thanks,
JOHN
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Old 09-13-2007, 03:12 PM   #2 (permalink)
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Quote:
Originally Posted by graciejohn2 View Post
Hi,

Just had the TORS pipes, CAT Bypass and appropriate tune installed on my 07 Rocket (not a Classic) and it sounds great.

Is a little bit of popping "normal" on decel?

What have you guys experienced?

Thanks,
JOHN
Yes, it's normal and not harmful to the bike. It results from a lean condition at low rpms and throttle positions. There are tons of threads on how to re-tune the bike to eliminate this but these all involve doing something "non-stock", such as adding a Power Commander (~$400 + dyno tune) or using the Tuneboy software ($400).
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Old 09-13-2007, 04:29 PM   #3 (permalink)
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Hmmm...okay. If that's how it is supposed to sound, then I am cool with it.....I just wanna make sure it has the correct tune.

I had a Speed Triple with Jardines and a Thruxton with the Predator pipes and they both had the appropriate Tune and Jetting.

Both of those bikes had some "Burbling" or "Gurggling" on decel, but not the popping and or "gentle backfiring" that the Rocket seems to have. Maybe it's the CAT Bypass kit that is doing it???

Anyway, I'm at the dealership now and they are just double-checking the Tune. We reviewed the Triumph manual again and re-downloaded the tune and let it sit through the adaption cycle again.

We'll see if that makes a difference. But if you say it's normal, then I'll shut up and enjoy the ride!

Thanks,
JOHN
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Old 09-13-2007, 05:44 PM   #4 (permalink)
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I have the same setup as you and mine has gotten a bit better with more miles. It still pops a little on decel but not like it did when the TOR/Bypass/Tune were new. I put mine on at 600 miles and around 1500-1600 miles it really smoothed out. Don't know how or why it did but the mechanic at the dealer told me the ECU on our bikes is constantly picking a better tune and the more you ride it the better it gets...
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Old 09-14-2007, 08:31 AM   #5 (permalink)
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I bought my 2005 with TORs installed and with the 20050 tune. It popped. I replace the Catbox with the Triumph box. It popped. I bought Tuneboy to correct speedo, recover full power and to correct popping. It burbles.
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Old 09-14-2007, 10:43 AM   #6 (permalink)
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I bought my 2005 with TORs installed and with the 20050 tune. It popped. I replace the Catbox with the Triumph box. It popped. I bought Tuneboy to correct speedo, recover full power and to correct popping. It burbles.
If you have the TOR's and Triumph cat bypass pipe, install this tune in Tuneboy:

http://www.r3owners.net/attachment.p...1&d=1155692504

Make sure you uncheck the O2 sensor in the Tuneboy Tune Constants tab and disconnect the sensor from the ecu. The connection is behind the black triangular plate on the right side in front of the painted side cover.

Let us know how you like it.
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Old 09-14-2007, 01:02 PM   #7 (permalink)
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Smile

I have a 07 Classic with the same mods and the popping really had me concerned. Yesterday, I had it to the dealer for the 500 mi service and he also rechecked everything including the mapping. I feel better now that others are having the same popping and this seems to be normal. I am glad to hear that things will get better as the miles roll on!
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Old 09-14-2007, 04:01 PM   #8 (permalink)
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I have a 07 Classic with the same mods and the popping really had me concerned. Yesterday, I had it to the dealer for the 500 mi service and he also rechecked everything including the mapping. I feel better now that others are having the same popping and this seems to be normal. I am glad to hear that things will get better as the miles roll on!
It didn't get better on my bike until I got Tuneboy. It is also worse in hot than cold weather.
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Old 09-14-2007, 08:15 PM   #9 (permalink)
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popping on decel

Power commander will eliminate it. havent heard of anything else that will although some on this site have experimented with the Tuneboy tunes.

My 05 Rocket had the power commander and it worked good to eliminate it, my 06 Rocket Classic has the Tune Boy and it still pops on decel.
I use ear plugs now and i dont hear any wierd noises anymore. :-)
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Old 09-14-2007, 10:54 PM   #10 (permalink)
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glw use this recipe to eliminate the popping and as doug stated earlier make sure you disable the O2 sensor because it will return.

http://www.r3owners.net/showthread.php?t=1804
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