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YOUR RESEARCHAir Intake systems
Leading reported evidence
Run fabspeed v-flow intake
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I ran the Fabspeed V-Flow intake for about a year; I reinstalled the factory airbox a couple of months ago.
Leading evidence: 'Run fabspeed v-flow intake' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check size' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Hell Mine's (famous Japanese skyline tuner) had a record setting R34 GT-R that made like 600HP (or more?) and still ran the stock air box because it wasn't a point of restriction and provided efficient ducting directly to outside air.
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Many grand am Koni and continental GT professional race car teams used my 996 stock air box pieces and found +8HP to +10hp with a BMW f1 air filter.
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Suggestion
I put in a Fabspeed CAI kit soon after replacing my dead cats with Fabspeed's x-pipe unit and the combination performs well and sounds incredible.
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Performed · outcome unconfirmed
Hell Mine's (famous Japanese skyline tuner) had a record setting R34 GT-R that made like 600HP (or more?) and still ran the stock air box because it wasn't a point of restriction and provided efficient ducting directly to outside air.
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Suggestion
Hell Mine's (famous Japanese skyline tuner) had a record setting R34 GT-R that made like 600HP (or more?) and still ran the stock air box because it wasn't a point of restriction and provided efficient ducting directly to outside air.
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The airbox on a 996 is ducted to pull fresh air from the louvers on the engine lid and it does not pull combustion air from the engine compartment.
So it already has a "cold" air intake system from the factory.
I'm not saying this to disparage the K&N system or any other, but I wonder about the effectiveness of any aftermarket system over the factory system.
+1 ... conventional wisdom (which, in this case, I happen to believe) is that the stock air box flows more air than a stock engine can use. So, until I do something about the exhaust side -- specifically, the cats -- I can't see any point in fiddling with the intake side.
If you add an intake system for performance, you are going to be very disappointed. In fact most aftermarket intakes are no better than OEM, and some actually cost you performance. In my case I have an EvoMS V-flow intake for one reason - the sound. The glorious, glorious sound. My biggest knock on a stock 996 is that it is too quiet, too refined. It's part of the reason why the air-cooled guys say that they don't sound like a "real Porsche". But with my V-flow and Fister style mufflers, the low RPM growl giving way to a high RPM howl gives up nothing to my built 3.2 Carrera. THAT is why you install an aftermarket intake, and it is worth every penny.
I ran the Fabspeed V-Flow intake for about a year; I reinstalled the factory airbox a couple of months ago.
* I did not notice a performance improvement either way.
* Due to my wonderfully loud Tubi Style exhaust, I don't miss any additional intake sound, but this can be a very nice benefit
The new Fabspeed setup (the dual-cone config) is really good looking, so I may install one of those sometime. With the dual-filter and the CF baffle, it's one of the best looking aftermarket parts I've seen in a while.
OEM box is best in most cases. Had an EVOMS and sold it because there was no point.
Hell Mine's (famous Japanese skyline tuner) had a record setting R34 GT-R that made like 600HP (or more?) and still ran the stock air box because it wasn't a point of restriction and provided efficient ducting directly to outside air.
If you really want more sound, might as well get a lightweight exhaust. At least then you'll save some weight off the correct end.
Actually this is not quite accurate. I've heard this repeated often and I believed it until I removed my OEM intake to perform maintenance and noticed the bottom is drilled full of holes where it will suck warm air from the engine compartment. So the OEM is not a true "cold" air intake.
At least that's how mine is constructed. I thought I took a pic but I guess it's on my other computer.
True, there are holes at the bottom of the stock intake. I believe these are necessary so water can drain. Those of us with fixed wings get a decent amount of water dumped into the stock airbox.
The EVOMS intake I had also had drainage holes, so neither intake is completely sealed from engine compartment heat. Additionally, the seal on the EVOMS intake does not effectively seal the box against the bottom of the deck lid. Had I kept the intake, I was going to cut a 1/4" plexi piece to more effectively seal the EVOMS airbox.
Effectively the same thing:
http://forums.pelicanparts.com/porsc...mple-free.html
Several companies sell a true cap and silicone replacement elbow from the box to intake.
Silicone intake hose with resonator bypass... Very inexpensive, sounds awesome. Personally, I far prefer a mean intake growl over a loud exhaust.
'Kit' prices are all over the place. I'd suggest buying an inexpensive silicone hose on eBay, upgrade to top quality t-bolt hose clamps for the new hose if the supplied clamps look cheesy, and a simple $2 rubber pipe cap for the resonator cap.
This one
on eBay looks fine for $32.50 and some nice t-bolt hose clamps
on Amazon
on Amazon
for $6. Double check the size...
The holes also kill suction in the box from air pressure, promoting better flow. I have a fixed wing and made up an alum air diverter for the top vent that provides a bit of a ram air effect into the factory intake - mostly works at high speed of course. The one thing I did for water (considering the wing vent slot can grab water) is I put in a small hole at the bottom of the bend in the OEM tube before it goes into the box just so water would have a chance to flow out instead of getting into the box. I've got the silicon hose and resonator removed with cap.
I put in a Fabspeed CAI kit soon after replacing my dead cats with Fabspeed's x-pipe unit and the combination performs well and sounds incredible. I got a few more HP on the dyno (presumably all from the cats). Plus the CAI opens up my engine compartment a lot; much easier to find my way around in there.
But the sound's the thing ... when I hit WOT in an underpass I instantly get a big smile, a boner, or both.
This is joe from Fabspeed Motorsport USA.
Way back in 1999 I dyno developed an upgrade kit for all the factory Porsche 996 air boxes. Many grand am Koni and continental GT professional race car teams used my 996 stock air box pieces and found +8HP to +10hp with a BMW f1 air filter.
It's real significant power tat is no bull****.
The key parts are a 996 airbox coverlid internal muffler delete thermoformed plastic piece that is held in by 2 Philips screws. There is a ridiculous helm hoots muffler in each and every Porsche 996 stock OEM air box retained by 3 screws. It blocks half of the air filter .
Next I designed a smooth 4 ply silicone hose to connect the throttle body to the Mass air sensor. Smooth and chamfered on each end so no boundary layer turbulence. The fabspeed Maxflo cold air kit works and enhances any Porsche 996 air box. I have an explanation video on my website demonstrating the system with dyno data.
The key to the system is Removing the stupid internal muffler in the air box and also installing the correct internal chamfered hose. Othe ebay people sell regular hoses and rubber caps to seal in the air box muffler and these parts will not work so don't assume everything is equal.
Last year I dyno developed a super high flow carbon Y pipe for the 996 through 997.2 cars and made a carbon heat shield and this system works great and is a big advantage over any factory stock OEM Porsche air box. Dyno developed and untouched dyno results.
Either of these systems at the racetrack will gain you many car lengths and passing power over the stock system I have been selling these systems and Especially the carbon fiber Competition Y pipe intake to racers and street , de drivers for years.
Even for street cars it makes the car sound great and feel like new!
Cruise by fabspeed Motorsports and try one and or we will have everything at the Hershey Swap meet.
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