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Old 12-11-2003, 02:25 AM   #1
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Default Sirio SP21PRPRO

How good is this motor? Anyone have it? How does it rank next to an RX21 R1WC, RB C5, and SX 21 Evo5 MS? I don't trust hp ratings so I'd like to know what the drivers think. Thanks.
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Old 12-12-2003, 09:05 AM   #2
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Default Re: Sirio SP21PRPRO

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Originally posted by nismoflip
How good is this motor? Anyone have it? How does it rank next to an RX21 R1WC, RB C5, and SX 21 Evo5 MS? I don't trust hp ratings so I'd like to know what the drivers think. Thanks.
Hi, I already tried Sirio and novar1wc.For me its the same but I go for sirio bec. price wise
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Old 12-12-2003, 09:42 AM   #3
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Hi

The Sirio S21 PRPRO is a very good engine, I've run them and they've been reliable and very competitive.

Don't forget the S21 PR, the PR is the ABC engine and is also very fast, and is probably a bit easier to tune than an AAC engine. Either one is a good choice.

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Old 12-12-2003, 11:47 AM   #4
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thanks fellas
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