Diesel Tdi: Installing Hiclone just before the inlet manifold will give you between 5-15% increase in power & 10-20% better fuel economy, placing a 2nd just after the inter-cooler will give you up to 50% more than one unit, installing one at the filter end of the pipe pre-turbo will assist the turbo and bring it on up to 600 RPM earlier which helps your fuel economy and power.
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