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Thunderbird Cruiser Chat Cruiser chat for the the Thunderbird twin

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Old 11-06-2012, 06:28 AM   #1 (permalink)
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What's under the seat??

Ok guys, another question from this novice TB storm rider I hope can be solved.
I have Foren Razorback exhaust pipes on my storm and they look and sound great. Sometimes when I go down the gears, giving a little rev (sometimes) I feel a thud from underneath the seat. What can that be?? I'm not sure if it's the way I'm changing gears or what? But I hope this can be answered.
And does anybody else have there exhaust sometimes 'crackle and pop' at times?? What causes this and/or is this normal with after market exhausts??
Thanks in advance.


Vespa to the Storm!
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Old 11-06-2012, 09:57 AM   #2 (permalink)
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The air intake is under the seat. You may be getting a backfire. heres the things with aftermarket pipes. Some are made to work WITH the catalytic converter in place. Some eliminate the cat. Others give you the choice of either. All of them tell you to use the tors map with them NOT because it's optimal for a catless setup. In fact, it's quite the opposite. But the reason they recommend that tune is because there IS NO proper tune for running catless! So they couldn't sell the pipes if they tell you that, so they say the tors tune is fine. And it is to a degree. I mean, the bike will run, but it will not run optimally and it will probably run pretty lean which is not good and would explain the backfires if thats what u r feeling.

Now, that said, i'm 95% sure the forans bypass the cat but i'm not sure. If you know they do i would suggest you run a map one of the member had made via dyno tune with tuneECU. o just by getting a cable for tuneECU and downloading the tuneECU software you can load that tune and your bike will fun much stronger and won't pop as much and won't backfire at all. I used that tune then did the seat hack (allows more air in) and added fuel to that map and that made a huge difference. The bike gained LOT of power. Surprised the heck outa me.
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Old 11-06-2012, 05:27 PM   #3 (permalink)
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Quote:
Originally Posted by dazco View Post
The air intake is under the seat. You may be getting a backfire. heres the things with aftermarket pipes. Some are made to work WITH the catalytic converter in place. Some eliminate the cat. Others give you the choice of either. All of them tell you to use the tors map with them NOT because it's optimal for a catless setup. In fact, it's quite the opposite. But the reason they recommend that tune is because there IS NO proper tune for running catless! So they couldn't sell the pipes if they tell you that, so they say the tors tune is fine. And it is to a degree. I mean, the bike will run, but it will not run optimally and it will probably run pretty lean which is not good and would explain the backfires if thats what u r feeling.

Now, that said, i'm 95% sure the forans bypass the cat but i'm not sure. If you know they do i would suggest you run a map one of the member had made via dyno tune with tuneECU. o just by getting a cable for tuneECU and downloading the tuneECU software you can load that tune and your bike will fun much stronger and won't pop as much and won't backfire at all. I used that tune then did the seat hack (allows more air in) and added fuel to that map and that made a huge difference. The bike gained LOT of power. Surprised the heck outa me.
Thanks for that. You are spot on. The Foran exhaust does bypass the cat and the backfiring is when I feel it under the seat. I might even take a ride up to the central coast and meet with the team at Foran. Have them do the adjustment.
Thanks for your response.



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Old 11-06-2012, 07:27 PM   #4 (permalink)
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Well, like i said there IS no "adjustment" for this that they will have except to sell you a power commander or tuneboy and dyno tune the bike which will run in the neighborhood of $700-800. Thats why i mentioned that custom tune one of the members has. I can point you to the download if you want that. Then you can load it into the bike with tuneECU and a cable for it. Total cost, about $10-20 and the results will probably be as good or close as spending that $700-800 i mentioned. If you should decide to do that let me know and i'll guide you thru it.
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Old 11-07-2012, 07:42 AM   #5 (permalink)
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Quote:
Originally Posted by dazco View Post
Well, like i said there IS no "adjustment" for this that they will have except to sell you a power commander or tuneboy and dyno tune the bike which will run in the neighborhood of $700-800. Thats why i mentioned that custom tune one of the members has. I can point you to the download if you want that. Then you can load it into the bike with tuneECU and a cable for it. Total cost, about $10-20 and the results will probably be as good or close as spending that $700-800 i mentioned. If you should decide to do that let me know and i'll guide you thru it.
I've been reading about the tuneECU, power commander and Tuneboy. Looking their sites, I noted the big warnings of destroying the engines if not done right. I also looked through the downloads and noted they didn't have the Storm 1700, but rather the TB 1600 with Foran exhaust. Am I right in assuming that this download is not the right one that I should be looking at?
To be honest with you, I really don't have the knowledge or confidence at this stage to do it myself with all those warnings, however, I will download TuneECU, play around with it and learn more about this. I really appreciate you directing me this to this download.


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Old 11-07-2012, 09:56 AM   #6 (permalink)
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The warnings are important, but you have to understand why they are there and for what. You can't give a warning that works for every single person because the range of understanding from one end of the spectrum to the other is wide. So they go with the waning made for the very least knowledgeable of us to eliminate any legal issues. But the fact is your chances of hurting anything if you just use it for loading known good maps for your particular setup and don't alter the map in any way you aren't sure are safe are slim to none. Even a botched download while loading a map into the bike is recoverable. One member did this on purpose to see and was able to stop the download in the middle of it and was able to recover it, and he did this twice i believe. As for loading unsafe maps, that could happen but it's not all that easy to hurt the bike that way. I've seen people trying all kinds of things like loading 1700 maps into 1600's and even altering them to give them just what they think they need for those unique setup. I have yet to see anyone hurt anything. You could likely load any Tbird map out there into any Tbird thats not highly modded at least and probably be fine. yes, they could potentially be damaged after a time but they aren't going to blow up. So all you have to do is ask and those of us who have used it a lot and know the answer will tell you whether you can do what you are thinking of safely. The warnings are a formality that they MUST put there. If you look at any product there will be warnings. You buy a house fan and theres probably a warning suggesting you could even risk death. It's all there for legal reasons. You could potentially die from a house fan, but what are the chances? You get the idea.

Anyways, loading that map i mentioned is easy, safe both in loading it and in the use of the map which was made on a dyno by a well respected tuner on a bike just like yours, a 1700 with aftermarket pipes and free flow filter and cat gone. You can buy a tuneboy or PC and have your bike dyno tuned and you will basically have the same thing but it will cost you. It MAY be better because they are tuning your bike and all bikes can vary a bit even with the same setup. But the difference isn't enough to make one bike run badly using someone else's map from a bike setup the same as yours. Just ask when you use it for peace of mind. I will always tell you if i am not certain enough about the answer too.
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Old 11-16-2012, 09:47 PM   #7 (permalink)
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I get some backfiring, rarely, on my stock 2012 Storm. It's usually when shifting from 2nd to 1st and veeery rarely from 3rd to 2nd, at lower RPMs. I previously owned a 2008 Rocket, and it happened much more often.
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Old 11-25-2012, 06:10 PM   #8 (permalink)
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G'day everyone.
I've got the same issues with the same bike.
Could someone link me to the sites for the tune info.
Where do you buy the cable from?

Thanks in advance.
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Old 11-26-2012, 12:31 PM   #9 (permalink)
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Go to TuneECU's website and it will recommend which cable to buy and give you a link.

Link to TuneECU overview: http://www.tuneecu.com/TuneECU_En/index.html

Link to Cable: http://www.lonelec.co.uk/index.php?m...products_id=32
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Old 11-27-2012, 02:02 AM   #10 (permalink)
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Backfire.

Thanks heaps for that.
Will check things out tonight after work.

So in most cases. You don't really need the $800-$900 power commander.
Trump dealer told me that they put the standard MAP for their OEM pipes and that I'd have to put the power commander on.
Surely not.
I'll research a bit more.
Thanks again. Regards. Wattsy.
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