Dolmar 7900 review

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Hello guys!

I discovered this forum recently, and I decided to buy my first Dolmar!

Tronçonneuses EXPERTPRO-TR790, Marque BÉAL - Yvan BEAL

As you can see, the brand is "Yvan Béal", but it's a Dolmar 7900 with different stickers.

I have several questions about this saw:

-I saw that there was another air filter for the chainsaw,

Chainsawr Dolmar 6400 - 7900 Chainsaw Heavy Duty Air Filter Kit 957 173 400 NEW (D-Bulky2)

Is it really useful? Some of the trees I cut have a very dusty bark!

-Is the Big Bore kit really improves performance?

BIG Bore Nikasil Plated Cylinder Dolmar PS6400 PS7300 PS7900 54mm | eBay

-Last question, is that useful to mod the muffler? (In my country, lumberjacks did not modify their machines). Working with a modded muffler isn't too loud?

Custom Modified Dolmar 7900 Power Ported Chainsaw Muffler | eBay

The seller say that's only for exhibition...

I have read many posts about modding and wood porting, and I find this very interesting. But if i know very well use a chainsaw, I have little mechanical knowledge (I just changed a few engines).

Thank you in advance for your answers!
 
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