Re: Straight Gas vs Dual Fuel
gas isn't as high octane as it used to be i'm told. but it still has different tuning than petrol.
you can't get a jerry can of gas if you run out.(thats why i like duel fuel and also longer range if rou need it)
it depends on what car you have but most of the time you tune the car for gas and make it run good enough for petrol.
if you build tour engine for gas: gas cam, proper gas carb(mixer) dizzy regraphed etc, you can make very good power and still have reasonable running costs,
what do you want to use your car for is another question?