Which class?

Heebeegeetee · 9 Jan 2007, 07:20 (Ref:1810167)

Hi all, new to this forum,

I want to compete in sprints and hillclimbs this year in my supercharged MX5. I'm not clear about which class I would compete in. The car is standard apart from the adition of the supercharger. The latest Blue Book I have is 2004 so forgive me if my info is out of date.

So, the regs for engines in Roadgoing production class is that induction is free, with a forced induction equivalency of 1.4, which I understand. The bit that confuses me is that the book then states that the car 'must remain in the same capacity class as the original car or the manufacturers specified option for the model and engine'.

I would have expected that by applying the equivalency factor I would compete in the next class up on engine capacity. If I can't do that, and I can't see how the car can remain in the same capacity class as the original car, does that mean I have tro compete in the modified production class?

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