I know this has probably come up several times, YES i did a search before posting here, but didnt really find anything..

Anyway I just did the wiresplice and bike seems to sound better, plus a little more power. My bike is basically stock except some cans. Will i need to rejet if I did the Wiresplice?

Thanks
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93' MC21

What you will most likely need to do is open the airbox up a little. 4 x 20~25mm holes in the top will do the job (you can tape 1 or 2 off to "fine tune" it!), then do a plug chop.

With no other modifications I suspect you will be OK on stock jetting, but you need to check the carbs are actually stock to start with! If you've never been inside them you can't be entirely sure they are stock anyway!!

As always, you can never guarantee anything. I know of at least one person on this very forum that did the wiresplice, opened the airbox, then went down on the stock jetting!!
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Andy.
NSR-WORLD.COM

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Yeah, but this same guy must have accounts at most barrel replaters in the UK.

How did it go?
"We like people who jet smaller, it shows balls!"

It's shows something, that's for sure.
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That was the 250 Fontyyy, and as I recall, that never blew up.
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Andy.
NSR-WORLD.COM

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Yeah, I wouldnt say the 250 is bomb proof but the only troubles came with the 300 kit and once the cure was found it proved to be very reliable.

The '18 is still going strong and waking the locals up every morning (and they say you cant commute on one).

All said persons replates cost less than your one big rebuild that lasted how long? lol
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If I have to take the carbs off once more...

Yeah, but then I let you jet it

and then proceeded to go two sizes down on that

and then rode it in a temperature of minus 3*c
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And it was perfect untill you fiddled with it again
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If I have to take the carbs off once more...

thanks

but to be on the safe side i think i will rejet if i am going to do to the airbox mod. Whats the figures on a MC21 with just wiresplice, airbox mod, and rejet?

One more question. Theres this squeeking sound coming from somewhere on the bike, but dont know where. I can hear it when i pul the clutch in 1st gear and slowly accelerating. Does anyone know whats wrong?
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93' MC21

Yep, I know now, once they're jetted safely they're rock solid, it just takes a couple of seizures and you see it all

aikawa, you'll see the best part of 60bhp setup well, then race pipes would give it a nice top end scream if you want at the cost of around 5bhp in the middle, so for the road std pipes are probably better.
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