Performance effected by GT3 aero kit ????

I was concidering a 2002 996 and adding a GT3 aero kit. When taking a closer look recently, I realized with the kit, the lid does not have openings to carry air to the air intake in the engine compartment. I know that on a carrera without such a kit, the spoiler deploys at approx 75mph and air is funneled into the air intake in the engine compartment. My question is: With the GT3 aero kit is the performance effected since air is no longer going into the air intake in the engine compartment.

the gt3 mkII engine lid has different intake openings. the engine lid you need is the aerokit II lid. it has the proper openings for the snorkel.

The spoiler on the rear decklid extended isn't for increased cooling. It is for downforce at speed. Think back to wind tunnel smoke demonstrations.

GT3 VII...That will do it! Another one to look at would be the GT2 replica by MaShaw. Has HUGE intake ducts

It'll actually perform better with the right aero kit at high speed.

vove hit the nail on the head. get the correct kit if you are concerned about high speed stability. Go with an aftermarket (like Dan at Vivid said) if you purely want bling. there is a reason Porsche spends countless hours designing a aero kit in a wind tunnel with very well paid engineers.

Aero packages need consideration. What is your ultimate goal? Do you drive on a track? If not, you probably won't notice any difference and in fact, the increased drag may affect your fuel economy and top speed. There is almost always a price to be paid for increased perfomance in one aspect and aero is a perfect example. More downforce means better contact patch but more drag and less top end speed.

How does $5000 sound for a comlpete OEM MKII aero package from a dealer?

To give you a price point, I paid $1500 for the front and $525 for the sides from a dealer. That price was SHIPPED. I didn't buy the rear wing since I have the cab. For time reference, I did this 2.5 years ago. Regardless, $5K sounds pretty damn high. I would shop around and even buy the pieces if you have to from different dealers. You could save hundreds if not thousands by being patient and calling around.

As a reference point, I am friends with several of the PDE and Panoz instructors (and race in both series). They told me that the non-aero kit 996 cars were faster on at Road Atlanta than aero-kit cars. A 996 will hit in the 130's before breaking at 10A at Road Atlanta. I personally think that the Aero Kit looks better but don't buy into the downforce theory applying for most situations short of Road America.

Have you ever been in a NON aero 996 at speed with stock suspension??? Let's just say the 2 best mods I made for the track were Aero and RoWM030.

I was quoted a little bit higher for the OEM MKII aero. Check with Branywine, they usually have good prices for these aero kits. I know someone who's selling a brand new uninstall OEM MKII front spoiler, might be able to save you some money if you are interested. Let me know.

did your friends say they were faster overall on the track or just in a straight line? i would agree with their assessment when driving in a straight line. the non aerokit cars will have less drag and therefore higher top speed. what he didn't tell you that the aerokit does help a lot with high speed stability. the grand am GS cup cars use the aerokit. i think that will also give you an idea of if they work or not

I've raced my car with and without the aero kit. It's hard to argue with the PDE or Panoz instructors but I'm guessing they haven't compared the with/without on many tracks. The front bumper cover and splitter are by far the most important. They don't provide downforce but do keep air out from under the car and reduce lift. This is very obvious and has impact on every track. I'd guess that this effect starts at under 100 mph. To test the impact all you have to do is remove the splitter and run a few laps. The wing is more of a question although, like all the GA cup cars, I'm convinced it provides a meaningful amount of downforce in moderate to fast corners. Last year at Brainerd I lowered/flattened my wing to see if I could get a little more straight away speed. I didn't notice a problem in the 140+ mph turn one but in the 90+ mph t9 I experienced major oversteer. I put the wing back up and it was gone. I'm pretty convinced that I'm faster with the wing on and up a couple of notches. The other thing to consider is that professional drivers/instructors are much more comfortable driving a car completely unhooked then the average club racer or DE guy. I don't doubt that a pro driver could take advantage of the 1 or 2 miles a hour on the straight of a non-aero kit car and still get it through the corners. To them our cars are pure momentum cars and anything that reduces momentum is bad. Me, I'll keep my aero kit on. Jim

Help?!? I'm a recent retiree who hass finally lived a teenage dream and purchased a 1999 Posche 996 with the factory GT aerokit installed. I 've noticed that the rear winghas two sets of allen screws on either side that I'm led to believe is the manner in which the wing is adjusted (if so desired). I have no desire to alter the elevation of the wing but it does rattle incessantly and loud enough to be heard inside. I can actually grab the wing and feel some slight vertical freeplay and yet all four allen screws are tightened fully. Is there a bushing that's worn out inside the wing, or somethoing other than the screws not being tight enough? Help!! This is all new to me and I'd appreciate some assistance in what I need to do to tighten the moveable portion of the wing.

I have driven non-aero; stock 996's on the track (PDE & PDE Masters) as well as 996's converted to track cars. I agree that suspension upgrades along with a good racing school or private coaching are the two best places to get quicker. I cannot validate the instructors claims personally but they had many laps @ Road Atlanta before the PDE moved to Barber. They were specifying quicker lap times not straightline speed. The instructor cars had Aero Kits, the student cars did not. I am pretty sure that Grand Am mandates the rear wing on the 996's. The car shown was added by my 12 year old son. I've tracked the car but don't race it in Grand Am. It belongs to a friend of mine (check lnsmotorsports.com). I have tested a 993 Twin Turbo with the factory spoiler and wing and hit 162 mph before breaking @ 10-A at Road Atlanta and had no noticeable unsettling with the car at that speed. From my perspective, the Aero kit looks better and if it gives the driver additional confidence, it's worth the investment.

i believe the grand am rules state that they may use an aerodynamic device i.e., wings/splitters if it stock option. they cannot use any aero that goes above and beyond that so they choose to use "something" rather than "nothing". i am not saying any of these aero devices create downforce but they do add stability and is not a placebo as to which you have alluded. the difference can be most felt on a straight. my early 996 without the aero would wander and the front end would feel very light. everything was much better after i upgraded the front bumper.

My understanding of aero is that a front spoiler removes tuburlant air from under the car that without the spoiler produces lift and drag. The drag removed from under the car may or may not equal the drag produced by the spoiler but I do know that with my race car I am faster with the front spoiler than without. I cannot use a rear spoiler in the vintage rules so I only use the front one to increase speed on the straight at Texas World Speedway. It works?

This thread on renntech.org shows how to take the center apart for adjusting. Once you take it apart, you will notice 2 or more bushings that may need replacing.