HHO Fuel Saver Kit HS 2000cc Pro Petrol / Diesel,up to 30-40% Savings,Less CO2

Firstly, the amount of HHO you need is based most of all on the engine RPM. If you have high engine RPMs, you need more HHO to maintain the correct HHO to air ratio going into the engine. Likewise, at low RPMs or at idle, you need much less HHO.

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