Ford Transit Tdi review Hiclone: Placing Hiclone just before the inlet manifold will give you between 5-15% increase in power & 10-20% better fuel economy, 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 induction pipe pre-turbo assists the turbo, bringing it on up to 600 RPM earlier and further help your fuel economy.
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