I had one and caused the engine to run way to hot for my liking, sold on eBay after just a few runs.
It's also not very neat and a pain to fit spot on, it's ok fitted off the engine but don't line up to smart once fitted.
Loads of air gaps so plenty of silicon is needed, also the KN style filter clogs up external and internal, remember this was just used for a few runs. Was summer and thought this be a good idea to stop grass build ups, but made it worse. Avoid.
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