I was at a classic car show today, and they had for sale on the trade stands High Flow air filters for improved performance (similar to the K&N filters) Has anyone tried them & are they safe to use?
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High flow air filter
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I had one on my astra 1.7TD and it improved torque a bit and maybe top end power but it had loads of induction whoosh.
Tried to fit one on the Surf and it whistled and didnt gear change for ages and was slow. I only spent a little while messing around when I did a service though so the old one went back on.Tim
Break It,Fix It,Repeat,Break It,Fix It,Repeat
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