morganabowen

Not sure if this has been discussed in the past, but I have a K&N CAI on my 2000 C4. It seems to me that there is no cold air going into the intake, why don't they call it Hot Air Intake? Is there a "REAL" Cold Air Intake System available to us Just curious

alpine003

Yes it has however I find these days, anything that attempts to shield the filter from the rest of the hot engine bay is called a "cold" air intake system.

If you're not sure whether yours really works as a "cold" system, take a temperature probe and place it next to the filter and then again in the engine bay and compare to outside ambient temps.

For the K&N setup, you could always cut the bottom of your decklid lining as well.

I guess a "true" cold air setup will be sucking in as close to the ambient air temp outside the engine bay if you want to split hairs.

Also, you might want to read up on independent dyno test articles between cold/hot setups. You'll find that it is more than just the temp of air that determines gains/losses.

DBJoe996

Yeah, real cold air intake equals OE air filter box with the OE horn that fits under the spoiler. Just saying...maybe Porsche already thought of that???

Chiamac

Just thinking out loud...

I wonder what would be more "cold air" with the stock setup? Even the aftermarket ones that don't have as full of a box would still be getting - at speed - it seems - a lot of the air from the vents above. I would venture to guess someone would need to make some kind of a scoop to really get a better airbox, and at that point why not buy a model that has them?

IMO

Paul Waterloo

I run my air intake past my AC evaporator, I like to cool the air charge by at least 10 F.

996lee

especially on a hot day with the engine up to temp from a standing start etc I can feel my car feels a bit down on power but mid to high revs it feels to be a bit more urgent
although I went for my induction kit more for the noise than the power gains
and I know you don't go popping the lid for every tom dick and harry but imo looks very sexy under there too



and a little vid for anyone interested


oh and I am planning on opening up the right hand side too so has a better feed as per the left side oe feed

KC-944 Turbo

Fabspeed has a nice cold air intake, but I don't think it will work on a 2000. At least it did not on mine, kept throwing a CEL. Fabspeed said they could fix it but would need the car. Other years, they could send a chip. It sounded GLORIOUS while I had it.

Flat6 Innovations

Those are hot air intakes, unless the deck lid is greatly modified, and the air box insanely insulated.

I have seen IAT increase 32 degrees when adding a CAI in the past. That was a back to back test, the same day, ambient temp only varied 3 degrees, engine bay temp only varied 5 degrees.

alpine003

Wow, "Jack" discussing CAI is pretty rare these days.

Flat6 Innovations

Yeah, and based on the PMs I've gotten I should have kept my freakin mouth shut.

I guess I'll never learn that silence is a virtue.

morganabowen

Jake, that is too bad you feel that way, because you're one of the few persons that I appreciate and whose expertise I value. This question came up because I was talking with a friend and we began to talk about CAIs (which were better). I've had the Evoms and now I have the K&N. The phrase "Cold Air Intake" was the opposite of what is actually happening under the deck lid. It appears to me that all that is going on is Hot air intake. Very confusing for a novice wrench like me

alpine003

True cold air systems = OEM Airbox. If you want additional sound and a slight bit power, get drop in panel replacement and ditch the intake resonator along with getting a silicone intake hose. This combo has been dyno'd to give just as much power if not more than a lot of the aftermarket systems.

As in traditional RL fashion, we can all over analyze this and continue splitting hairs and making more effort out of nothing that would be negligible at best in the real world.

sparks259

Jake, keep up with the comments. To listen to one side of an "argument" is useless. You have always been the calm voice of reason.

Flat6 Innovations

I've been calling them hot air intakes since around 2002... Along with short shifters, these things are among my most despised components..

porschedog

I installed the K&N CAI on my Jeep Cherokee Overland. I love the sound. Added a Flowmaster when the wife ran over a mattress on I95 that minutes later had melded itself to the OEM muffler like a tuna melt. Now it has great noise from both ends.

I like the look of the Fabspeed dual CAI setup. Based on my satisfaction with the Jeep install, I planned on the K&N CAI for the 996, actually making the step of purchasing the kit. But I balked at the thought of drilling any holes, even small ones, holes in my beloved P-Car. I saw the need for holes when I was reading the directions prior to the install. The Jeep was a simple "slap it on" affair - no drills, no violence, no anguish.