i'd be looking to rebuild the carbs with oem parts back to standard spec apart from slightly upized jets for the can. (115/118 or possibly 118/120) Then get it on a dyno (best £20 you'll spend) for a look at where the fuelling is, then adjust to suit- taking advice from your riendly dyno operator/specialist.
Oh, yeah and get a new oem filter on there too...
VFR 400 Fueling
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jetblack
- Site Supporter
- Posts: 516
- Joined: Sat Apr 24, 2010 5:21 pm
- Bike owned: '89 NC30 SEED
- Location: Nottingham