How make Tubi more quiet?

Buy a used stock muffler and swap it.

 

I’m sure factory tail pipes with valves fit in to the tubi back box


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The previous owner of my Modena fitted a Nouvalari system to mine and then realised it was too loud, so re-fitted the valved OEM tailpipes to it! Best of both worlds!

 

I have heard that oem tips will fit the tubi. I have not done it myself but plan to fit a pair this fall for the same reason as you mention in your post.

The car is just too loud at low rpm for me.

Depending on your timing I can let you know if they work.


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Sounds like you want a valued exhaust.

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I put the stock tail pipes back on my car to have valves. Too me the car was too loud inside to handle without them.

 

I cut the stock valves cut out of the stock tips and had them welded into the tubi tips, its perfect now.

(if you do this, be aware they are not perfectly a mirror image, one valve is in a slightly different spot than the other so place them just like stock)

 

I just installed Tubi headers and the Tubi sport exhaust with valves. It removes the big muffler in the engine bay and utilizes two mufflers down below right behind the exit ports in the bumper. It is suspended by a new bracket system with rubber isolators. Gets rid of the old bracket on the transmission. A win win!


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I had a non valved Tubi. All the exhaust gasses go through the muffler. A valved exhaust simply bypasses the muffler when the valves open making it louder with better flow.
I can't possibly see how adding valves would make it quieter.

 

I contacted Tubi about this back in January. Their recommendation was to add the valved end tips (01239911020V).

 

I Love My Tubi...Couldnt Imagine It Without The Exhaust...

 

I guess I can see if you put valves in 2 of the 4 pipes then when closed you've choked it down to just breathing through 2, so it would be quieter.

 

I tested by blocking the two outside pipes, where Tubi installs the valves. It was definitely quieter on a cold start…that’s where my neighbors get snippy at 6am when heading out to a cars and coffee. Still weighing the cost ($2500) versus the occasional apologetic bottle of wine .

 

I feel like my Tubi is too quiet at times. I have always been curious how loud is the stage 3 Capristo exhaust really? It’s hard to gauge the sound on a YouTube video but at my age, I think I would probably regret the switch.

 

Aahh, that above relates to my 430. My previous 360 is different as when valved it simply blocks 2 pipes rather than bypassing the muffler.