Makita 6421 catalytic converter removal gains?

[Flint Mitch]

Finally got rid of my cat!! It sounds better and seems stronger. I have it roughly tuned but haven't put it in wood yet. What if any power gains can I expect. I also have the HD filter setup. I figure since it breathes better it should noticeably run better?

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[CR888]

Your gonna need to hang on tight. The saw will want to jump out of your hands and fell trees itself. Be careful now.

 

[Flint Mitch]

Your gonna need to hang on tight. The saw will want to jump out of your hands and fell trees itself. Be careful now.

Lol!!! If that's true I wonder what the 7900 is capable of

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[Backtroller]

It's hard to say how much removing the cat made on my saw. I cut the majority of the cage inside too and opened the inlet to match the exhaust port. It was an improvement but I never timed anything. I feel that it did help the saw run cooler.

However swapping to a 7910 top end really made a huge difference. A simple "bolt on" makes a large chassis for the cc saw into a light for the cc saw if that makes sense?

 

[Jon1212]

It's hard to say how much removing the cat made on my saw. I cut the majority of the cage inside too and opened the inlet to match the exhaust port. It was an improvement but I never timed anything. I feel that it did help the saw run cooler.

However swapping to a 7910 top end really made a huge difference. A simple "bolt on" makes a large chassis for the cc saw into a light for the cc saw if that makes sense?

Makes sense to me. If the chassis will support a larger power source, it generally means less wear and tear to do the same workload.