intake theory

[neil_jdmr]

I have a hks intake kit which i know is not the best and it suffers badly from heat soak, or so ive read on numurous forums. Now i know heat soak affects NA engines in a major way as its a direct route from filter to throttle body and through into the intake manifold.
 
But i cannot see how this affects forced induced engines in the same way as for example:
if the intake air being sucked in is like 30 degrees (hot day), It then gets blown around by the turbos at 100+ degrees as they are always so bloody hot. Although then the ic comes into play to cool the temps before directing the now cooler air into the TB.
 
So even if my filters were sucking in cooler air say 10 degrees the air still has to be blown by the extremely hot turbos so the difference in air temps actually reaching the TB is affected by the efficiency of the ic and has little or nothing to do with what intake/induction/intake position.
 
OK ok so if you had your air filter stuck out a hole in your wing it would make a significant difference to your temps but does heat soak really make that much difference as its gonna be sucking in hot air just about anywhere you put it in a fd engine bay.
 
Please let me know your thought on this.

[Spartacus]

First off you need to find out if the measured air temp is actually the air temp or just what the heat soaked sensor thinks it is. If the air didn’t move it might be the same but as it does and at some speed I think you will find the actual temp of the air is a fair bit lower than is being reported. Obviously anything you can do to drop this further is better.

So basically what I\'m saying is that as the air is passing over the hot turbos it doesn’t heat up as much as you would think.

[Bobbit]

i\'d think it would bud tbh, 10 degrees hotter as a starter is still 10 deg hotter. So if you\'d have air entering at say 20 deg, when it\'s gone round the turbos, through the I/C and into the engine the temps could be 40deg (i\'m makeing these up) where as if you started with air at 30 deg then it would enter at 50 deg. As the air follows the exact same path the heat should be effected in the same way so the colder the air to start with the better i\'d think

[Mart160plus]

On my first trip to the Ring I was running standard intake cold air box against a friend\'s aftermarket \'hot air\' intake.
Comparing PFCs my inlet temperatures were in the 40s or 50s, his were high 80s. All other kit was the same. Gets hot under that bonnet.

That\'s why several mods later I still run the cold air box.

[Spartacus]

On mine I have just isolated the inlet elbow and air temp sensor from the rad top hose which was heat soaking it and now the sensor reads a much lower air temperature but it would still have the same temperature of air (near enough) entering the engine.
So you really do need to make sure that what you are reading is accurate before trying to lower the actual intake air temperature.