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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Engine » Exhaust: Headers, Muffler, Gaskets, Supports » Archive through September 19, 2006 » Home made muffler « Previous Next »

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Alessio66xb12r
Posted on Friday, August 04, 2006 - 12:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

i just finished to built my own muffler from a project by h.p. performance of italy(race bike of trojan i think use that).
it looks very nice :after the end of the headers (the two in one ) a tube of 60 mm diameter go to the back of the bike near the rear tire just under the original muffler rear attachments than a 180° u-turn and the silencer that go to the front side just to the right side of the two in one of the headers than a 90° turns of 60 mm diameter for the gas exit.like i told you it looks good and considering its my first experience its well fished to (all done with mig machine).but.....in the first range of rpm 1000 to4000 its ok and faster over.. from more or less 5000 rpm it work bad rpm's accellerate very slow with full throttle open . i think its to lean , so i want to know if putting a module like tfi or rapide bike ( consider that i have the race ecm and kn with open airbox) it will work fine with a richer fuel ratio at the top end. let me know what you think about ...please. bye Alessio
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Diablobrian
Posted on Friday, August 04, 2006 - 03:34 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Alessio,

It certainly sounds like you are going lean on top. From your description of your system the race ECM won't be enough.

A TFI, a megasquirt, or a Power commander will probably fix the problem. A Direct Link re-flash of the ECM will definitely
be able to fix it, but I don't know where you are going to be able to get it tuned at.

Does Jens at Hillbilly-Motors Motors Do Direct Link tuning?

If you go with the TFI type system you can tune it by reading your plugs and by feel if you do not have a dyno available, but it
can take a long time to get it right that way.
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Alessio66xb12r
Posted on Saturday, August 05, 2006 - 05:36 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

to all and to Brian
Hi my friends
i'm not sure to be able to work and fix a "direct link" maybe a "rapid bike" from the same company is more easy the more easy way should be the tfi the most simple of all ...really i don't know what i have to do....i think i 'll get the "rapid bike" .please take a look on the net at www.technoresearch.com and let me know what you think.any help its welcome. thank you all
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Alessio66xb12r
Posted on Saturday, August 05, 2006 - 05:42 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

i forgot
hillbilly is located in Germany more than 800 miles from here . that company has a man who represent them here but is not so easy to speak with him . i ordered a windscreen two years ago and i'm still waiting...
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Diablobrian
Posted on Saturday, August 05, 2006 - 10:55 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

rapid bike isn't something we see much of on this side of the pond, but it looks like it may do the job.

It will likely take some tweaking to get it right.

I understand the geographical limitations, even at 800 miles it's likely that Jens at Hillbilly-Motors is the closest Direct Link tuner
to you. It is so new and so few have got experience with it.

I hope that things work out for you with the mods you've made. How about some pics of your pipe?
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Bud
Posted on Sunday, August 06, 2006 - 01:38 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

alessio,

your running a hotperformance kinda setup,
i like it : ) ,
perhaps you can ask marchello of www.freespirits.it for a adres off a good tuner..he selfs the tfi box
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Alessio66xb12r
Posted on Monday, August 07, 2006 - 01:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

PICTURES COMING SOON. I'VE NO DIGITAL CAMERA YET.
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M1combat
Posted on Thursday, August 10, 2006 - 10:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

That sounds kinda like what my Force pipe did on my XB12. It was VERY rich in the lower RPM range. I've used a TFI and a PCIII and the TFI was completely useless. The PCIII worked fine, just read the directions on the site very carefully. That said, the DL or the Rapid Bike seems like a better solution.
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Alessio66xb12r
Posted on Friday, August 11, 2006 - 03:26 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

thank's you m1 i'm thinking the same about d.l. and rapid bike. "maybe direct link" is better because it can do the tps reset also and the rapid bike , i think can't do it . the choice its between this two stuffs but i don't know ...really. any help is welcome bye Alessio
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