Honestly, first thing I always say is, put it back to (relatively) stock!

For a start, I'd be putting BR9ECM plugs back in it. (Or are those the Denso equivalent? I've never used them.) Second, "race fuel" really might not be helping as you may be expecting. I've never used "V2", so can't comment on that specifically, but I can tell you that (a) I'd never run AVGAS in anything but a full F3, and (b) the last time we set up an NSR to run on Elf MITS-46 "race UL/fuel" (an NSR500V), it was shite! The client immediately lost 15hp, and required a completely different setup. The powerband became the proverbial light switch too!

What's the best regular pump fuel you can get where you are?
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Andy.
NSR-WORLD.COM

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