Hi folks

The reason for am asking is becuase i was doing some "testdrive" with my Octavia vRS (2.0TFSI) yesterday morning and the temper outside was around 10, and i was chocked the about the performance compared to the higher temperatures at day 23-27 degrees, the car felt like it was tuned up then i was colder and raw in the air, so i wounder if it is me(paranoia:rolleyes: ), or this could been explained better than ppl who have knowledgde about this

Sorry for my english(needs desperatly an english course:P )

Colder air is better for engines.

Thanks for the replay VRStu

It is because of the turbo, or does this have impact gererally, turbo or not?

This might explain more -

http://en.wikipedia.org/wiki/Cold_air_intake

Yes, cold air makes your car faster... definitely most noticable on forced induction engines.

Thanks for the links and all your help in here

The average here is 30 degrees at the moment and gets to 45 and I think the car is great, roll on the winter woo hoo!

Colder air is denser, therefore more air is inducted into the cylinder. The same effect occurs with a turbo / intercooler setup when the ambient temperature is higher.

one of the reasons that it's noticed more on turbo aspirated cars is that denser air is fed into the turbo and then cooled down even further in the intercooler before being inducted int the combustion chamber.

Put simply when it is cold you get more air into each cylinder resulting in a bigger bang for your money and thus more power from each bang.

Result your vehicle appears to run better. Simple.

So you're saying this guy is full of ....

Quote:

Have you ever noticed that your car is quicker when it is cold outside and wondered why it could not always be that quick? Well this module once fitted sends a signal to the ECU just like it does when it is cold, then the ECU slightly adjusts the air/fuel mixture which boosts your cars power, it is very simple! The best thing is economy is not increased and can be improved with the fitment of this module!

What he is offering is a resistor that will fool the car into running rich. Only suitable for petrol models and not really worth buying IMHO.

What he is offering is a resistor that will fool the car into running rich. Only suitable for petrol models and not really worth buying IMHO.

I think i would save my money for remaptuning:D

Hi folks

The reason for am asking is becuase i was doing some "testdrive" with my Octavia vRS (2.0TFSI) yesterday morning and the temper outside was around 10' date=' and i was chocked the about the performance compared to the higher temperatures at day 23-27 degrees, the car felt like it was tuned up then i was colder and raw in the air, so i wounder if it is me(paranoia:rolleyes: ), or this could been explained better than ppl who have knowledgde about this

Sorry for my english(needs desperatly an english course:P )[/quote']

You are right RSdriver, denser air ie colder, means more oxygen in your cylinder. This means you can burn more fuel properly and therefore get even more power. Your Turbo does this by compressing the air into the engine, but as this heats up the air in the process, an intercooler is needed to bring the temperature back down in order to give you more lovely oxygen per cubic inch

Yes, cold air makes your car faster... definitely most noticable on forced induction engines.

Does it make the car faster, or does it just not make the car slower?

Chris