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The way I understand the "derestriction" thing is that unless you bought the bike under a tiered license that requires a limited amount of HP then you don't have "restricted" carbs... it's not a US thing so I don't really know any specifics on that... maybe Andy James can help here?

In any case, *any* jet kit is gonna increase fuel-consumption... that's what it's *designed* to do. You can't make more power without burning more fuel. Be nice if it was free.
 

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I thought that some of the bikes (nope, sorry I don't know which ones) had restrictor plates in the airbox ala NASCAR to limit airflow and therefore power. Good luck. Troy341
 

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if i remember correctly, on your bike, the restrictions are in the intake and exhaust. there should be webbing in the intake boots that reduces intake area - derestricting would involve cutting the webbing out. the restricted stock canisters also have a smaller baffle than unrestricted ones, but if you've got aftermarket cans this won't be an issue.
 

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Jeff's on the right trail (no shit!). I believe the GSXR intake restrictors (uk) are simple aluminum plates that site between the carbs and intake runners...pull the carbs awaY and turf the restrictors. I believe they covered about one third of the available cross sectional area.

I can't remember whether the pipes were done in tghe canister or the old washer in the head pipe routine. I think the only fix was to run aftermarket.

I'd keep the stock air box and simply run the stock replacement single KN or BMC. I'm not a fan of Dynojet kits, simply because their needles etc don't match anything in the real world. I prefer Factory Pro who use Mikuni parts and dont require drilling fucking holes in your slides etc..

Either way, the kits range from useless to a lot of work if you don't have the dosh or access to a dyno tuner. Lucky for you, the UK is crawling with bike specialists. Makes north america look like a desert in comparison. Good luck - you'll transform that beast when derestricted (unless its a German/swiss grey market...ouch).
 
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