I am from Toronto, Ontario, Canada. I have a 93 NSR250 SE Dry Clutch and I recently just bought a set of TYGA SS SS exhaust chambers, no silencers(using stock). I have used the wire splice do derestrict my bike and have even did the GPS mod. My question is do I need to re-jet my bike. I have the air box mod and the pipes. To my knowledge the jetting is all stock. Can you give me a base setting for my bike, Im failry new to the 2 stroke scene and is not too familiar with jetting. Any input would be great. THe reason I ask all this is because I just did a top end rebuild and riding season is about to begin here in Canada, I don't want to blow up my engine the first day of ridding.

With a mod to the airbaox and new pipes, I think you'll benefit from a rejet. The motor should be flowing much more air so you'll need more fuel to match that...
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