Tuned pipe for Tohatsu 50d2??

[Blind_Mel]

Hi is there someone who has or knows where I can get a tuned pipe for Tohatsu 50d2 and would some 70hp carbs be a good upgrade?? And where can i get carbs and the pipe??? I race a zapcat in Norway my record is 60mph but I want more

[Fast Fred]

yes the 70 hp carbs will help, big help, the tuna you can make your self.

[Roflhat]

Hi Fred,
any pics/info on how to make a tuner?
would love to try making one
cheers

[Fast Fred]

you can use the stock tuna, there is a squeez spot bout an inch down from the top, open that up about 30%, weld a trumpet about 3inches up from the bottom. works

[Roflhat]

I think I'll give this a try, by trumpet do you mean like the shape of a velocity stack? Do you have to shorten the tuner?

[Fast Fred]

the shoter the tuna the less low end you will have, the trumpet or flair at the botom of the tuna helps the sonic reflection