Yasuni TUB-650 on Honda SH150i-6

Unfortunately i have postponed this for a while because of the lack of time but i should make a "final" comment;
Yasuni answered as you can read below, they where on holiday, the mailbox was broken ,apology's accepted, the returned mail was friendly and courteous and they bribed my with a T-shirt, i am now a member of the Yasuni owners club ;-)

Their answer;
you should only remove the final db-killer, the front pipe is not mend to be removed , if you remove it it will make (a bit) more noise and deliver less horsepower.
I can confirm that, after driving now for some time i know for sure; it delivers more HP with the pipe in, so the front pipe should be in and keeping it in keeps the noise down to a still acceptable level.
I still have the rear db killer out and the noise is tolerable and i live in a "quiet neighborhood".
The replacement of the glass wool/fiber is a disappointment as Yasuni says you will have to take the complete exhaust apart and they warn that it is a job which effectively can only be done at the factory.
Practically seen this means that if en when the fiberglass is gone you can chuck the exhaust in the scrap container because sending it back to the factory and such is not a cost worthy solution, that is really a pity and imho not a solution worthy of a "world brand" like Yasuni.
Remains to be seen how long it will last, perhaps the glass wool/fiber will outlast the exhaust, i have no idea, yesterday i took it of to replace a rear tire and it still looked like new on the inside...
1 tip for removal: copper paste/grease on the joint between front pipe and muffler will not last, it will just burn away and removal will be troublesome (so much for the 1000 degree Celsius "guarantee" from DowCorning/Molykote).
What will help is ceramic based anti seize, it will still burn away but will leave a light powder like residue which will ease removal of the muffler from the front pipe.

So several months later: would i still buy it again? YES
Below my first initial comment:
********************************************************************************­********
A vid on my latest purchase, a Yasuni TUB-650 for my Honda SH150i of 2006.
Some info on the DB-killer(s) inside,the performance, a small ride to let you hear how it sounds while driving, little problems and disappointments and more.

Major disappointment for me is the fact that i have unanswered questions about the use of the two db-killers , how to open the exhaust if the damping material needs changing (which it will at some point in time) and Yasuni won't respond to emails or webforms i wrote them, a bit of a let down on a great product, i expected more of a brand that is into GP racing and such ;-(

If you want to see/know more about the Yasuni or the Honda SH please visit www.shcooter.com , a forum for SH enthusiasts.

Category:

Autos & Vehicles

Tags:

• Yasuni TUB-650
• Honda SH150
• Yasuni 4 stroke exhaust
• Yasuni db-killer
• road 4
• scooter 4
• honda SH125
• Scooter 4 / TUB
• scooter 4T

[robber576]

I dont wait in particular for the light to go of but usually it is of when i start, i never noticed bad behaviour but the idea is interesting enough to investigate....

[robber576]

Well, i got mail from the sales department of Yasuni, they say they will look into my questions.....

[robber576]

You wont regret buying it, Yasuni claims 1 HP gain and i asume that is with both db-killers in.

Still had no answer from yasuni....

[l3owman]

When you start your bike, do you instantly start the engine after turning the key? as i see the fuel injection red "FI" light in the middle of your dash, same as on mine, you should wait for that light to go out before starting the engine or it will hate you for it, mine splutters and coughs if i dont wait so i always do.

[offsail1]

Many Thanks for your interest in YASUNI. Indeed your YASUNI belong to the first production lot, where now is not needed to grind the bracket. The DB killer is only the final end cup, which taking this out, the engine performs better but the noise level is on le legal limit to ride in publics roads. If you take away the inner (long) tube, you’re loosing performance, is a must to keep it in all times.

Sorry about the in mail box, were was collapse for a while, now we try to re-establish it, thx

[offsail1]

Hello Robert!

Thanks for your kind comments and video that always is feeding back to improve.

because we back to work on factory next week, we´ll keep you update your inquires together with our tech staff.

Please let's know aside (comercial@yasuni.com) your post address and email to send you free the latest YASUNI T-SHIRT design.

Meanwhile not stop to ride safety and with pleasure

alex.

[Arbiterpl]

Thank you for test. I have 125i from 2010 in original setup