Air Filter covers on EFI Classic C5 and Bullet B5 models
14th October, 2016
Many of the earlier EFI Classic Bullets (also known as C5 models) and B5 Bullets were supplied without a cover for the air filter.
Without the air filter cover air is drawn directly into the fuel injector - bypassing the air filter.
An engine breathing unfiltered air is liable to premature and rapid wear. The omission of the air filter cover may also adversly affect engine performance.
Some EFI owners experience an annoying flat spot on opening the throttle, with the engine at times almost stalling. Fitting this air filter cover is known to help produce a smoother throttle response and in some cases has eliminated that flat spot.
We suggest that in all cases the correct cover, as shown in this picture, should be fitted.
If this cover is missing from your EFI Classic C5 or B5 Bullet the cover you require is part number 591681 at £17.60 plus postage and VAT.
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