Need new pic of F/L
Join Date: May 2005
Location: United Kingdom
Re: Has to be done - Insulating the air intake
Stevo, yes you are right to a point, but the point is this, colder air is denser, thus contains more oxygen, and therefore able to produce a bigger 'bang' in the cylinders, no extra fuel is added by the ecu, as it is governed (as Cheradnine mentioned) by the air flow meter, flow not density. The net overall results are negligible, in the region of 1-3bhp, if your lucky! But the effect is the engine feels more responsive and will rev up quicker. The difference between a barmy hot summers day, and a cold crisp winters morning. Now going to show my age here, have you ever heard of carb icing? where ice forms in the venturi of a carburetta, well this is caused by the air flow moving so fast it becomes very cold when the pressure is droped in the venturi, to give you an idea a very rough working out of a v6 2.5, each cylinder at 3000rpm would have around 7000cfm, not much chance of it getting heated in the intakes. You need to stop hot air entering at the beginning, at the air filter. Sorry to dampen your parade there. Oh and modified/remapped ecu chips are very carefully worked out to optimise all the engines aspects, rather that the manafacture trying to do a one fix for all its markets.