cons of mushroom filter?
 

what are the cons of a mushroom filter on a the front of the vortech unit? warm air? what else? thanks guys.

Surely the intercooler will reduce IATs more than having a filter in the bay will increase it? I'd love to see some real testing comparing air temps pre and post intercooler with CAIs and SRIs. If you look at any high powered cars like Supras and Skylines, they usually have their filters sat in the engine bay. I doubt that the ambient temperatures will have nearly as much impact as the compression on temperature.

I see what you're saying. I see the same thing too. That's why I'm curious. Plus it'd free up lots of room for me in the engine bay. Hoping we can get further input. Thanks for the input!!! Appreciate it !

I think a secondary question is how well does the intercooler cool? I've lots of calculations about heat gain by compressing air, but does the intercooler drop temperature by a constant xC in any given circumstance or would higher temperatures be cooled more efficiently?

For example (ambient of 10C):
a) In: 60C Out: 30C and In: 70C Out: 40C
b) In: 60C Out: 30C and In: 70C Out: 34C

Alot of this can only be tested on the road due to air travelling over the intercooler. I'm interested in the same findings as I tested the stock intake for heat soak, but I'll be looking to remove the stock CAI when I fit my Sprintex charger later this year and will be interested in how much of an impact on IATs it makes post charger.

Have you got any way of measuring the IATs? Where is the sensor on the Vortech?

You know I'm not even sure. You're far more advanced than I am w this stuff

The real question is "if intake temp is A and cold pipe temp is B...if intake temp becomes C, does cold pipe temp still equal B or does it become D?" Do they vary accordingly or is your intercooler so efficient as too always cool to B?

With further reading, it would appear that's what you're talking about. It would stand to very, very basically argue that higher intake temp equals higher output temp; the real problem then becomes "is the difference in output temperatures significant to performance versus the benefits of a higher intake temp?"

People love to harp on "hot air intakes" if you post a pic of one. I really don't think its as huge a deal as some people make it out to be. I personally am a fan of an air box that get feed from an outside source like the factory intake. Often the complex route to get the filter into cold air makes it counter productive. Id rather have a hot air intake then a cold water intake.

Like it was mentioned before there are plenty of very high end very high hp cars that have the filter right in the engine bay so it cant be that bad.

How and where the car is used also needs to be considered. Race cars are always moving at high speeds with air flowing in and around the engine bay. A street car spends time heat soaking while waiting in traffic and even when they get going its not that fast on a normal road. I didn't go over 45mph on my commute this morning.

Im sure someone will post a dyno chart of some car with a short ram vs cold air but thats on a dyno not real world use.

And thats my morning coffee .02 for the day

I would be more concerned about filtration efficiency TBH

One problem with mushroom intakes like the HKS Suction filters is that they'll keep cats and dogs out of your intake but not much else. Saw tons of dust in my Evo's intake when I ran one on my car.

They'll flow more, but just a small step up from running filterless IMHO. You'll also probably want to tune the ECU carefully for that filter as we found that they lean the engine out sunstantially, which could lead to detonation.

Depends what your priorities are though. For maximum flow the Perrin (or was it FA20club?) filter + in-bumper cold air tube setup looks good.

Example B is correct. Heat transfer is driven by temperature differences, so the greater the difference between the hot air in your intercooler and the ambient air, the more heat transfer there will be.

Wow so much great input !!! Thanks guys. Hmm what to do

This. If you want to make your own intake or just run a filter on a pipe, that is fine, but go with a good filter. K&N has many different shapes and sizes available if size is a major concern.

aftermarket Air filters are junk:
[ame="http://www.youtube.com/watch?v=gCi2yo4UqPI"]Cold Air Intakes Mythbusted - YouTube[/ame]

I think you meant the benefits of a higher flowing filter/system? ;)

This sort of question have too many variables that realistically I think it will matter little when you really need it, when you're driving at speed. Heat soak is an issue when stationary or in slow traffic, but then the intercooler will be inefficient at those speeds and the compression of air will cause the air temperature to rise, whether CAI or not it will be above ambient anyway .