Air Intake Kit? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

my89_928gt · 11-13-2005, 12:34 PM

Over oilling is the biggest problem with oiled filetrs like K&N. The mass on the Boxster is very close to the fileter.
Hmmm, I have nearly 20K miles on my Boxter with a K&N. No problems at all. The intake is a louder than just desnorkling.
Performance gains I can't tell any differance. So, with that said I will most likely put the stock fileter back in at the next cleanning(witch it's about time now). Not worth it to me and do not want to take a chance of screwing up the MASS.
I don't go for the shorttning of engine life. Makes sense that it may allow more dirt through. Maybe it dose maybe it dose not. How ever I have had K&N on 2 previous 928's one of witch was on their for 5 years as a daily driver. No, problems and compresion was still good when I sold it(did not check before hand)
Also, have a very good freind who had a 89 928GT(yes, I had one to) and at around 60k miles he put one in. Near 8 years later and 184K miles the car still ran perfect(car got totaled).
Also, had a Nissain Altima several years ago that ran with a K&N from about 80K miles to 197K miles when I sold it. Car was haveing issures, but engine was still sound.
So, dose a K&N realy shorten engine life? Maybe, but if it dose it must not be by very much. This of course is my opinion.
Would be nice if some Consumer Co. could do a study on that so we could no for sure.
Personaly I have about given up on K&N anyway as no car that I have ever had with it any realy seemed to make a diffence to me. Just improved the sound a bit.

Richard

nastyboxster · 11-13-2005, 05:20 PM

I researched for about 2 months before I installed the Evo Air intake. Great sound and performance increase. Installation could be a handful. The shop quoted me 2 hours to install, but took actually over 5 hours. Luckily, they only charge me for 2.

The website dynoed 8 hp increase, but feels like much more. Well worth the upgrade.

xclusivecar · 11-13-2005, 06:21 PM

Quote:

Originally Posted by nastyboxster

The website dynoed 8 hp increase, but feels like much more. Well worth the upgrade.

Just curious...can you FEEL 8 horsepower? And what did 8 horsepower cost?

Adam · 11-13-2005, 06:33 PM

8 hp is just what EVO claims it makes. Not likely to happen for the average user. In fact, if I'm correct I believe Clubhead reported a hp and Tq drop after installing the EVO intake. One mod other than a supercharger or or turbo is unlikey to make a perceptible difference. You have to combine bolt on mods in order to really feel a gain.

xclusivecar · 11-13-2005, 08:45 PM

Quote:

Originally Posted by Adam

8 hp is just what EVO claims it makes. Not likely to happen for the average user. In fact, if I'm correct I believe Clubhead reported a hp and Tq drop after installing the EVO intake. One mod other than a supercharger or or turbo is unlikey to make a perceptible difference. You have to combine bolt on mods in order to really feel a gain.

Just what I thought. On these cars your best off saving your money and focusing on something other than "bolt on" go fast goodies. Either do it right and spend the big bucks (engine swap, engine teardown/rebuild) or don't do it at all. Intakes, exhausts, chips, for these cars will run you into the thousands of dollars and yield a measly 15-20 HP or like mentioned above you will LOSE power. Not to mention that nagging CEL. Very touchy, these cars!

jhmcmath · 11-14-2005, 07:44 AM

I've heard from a reputable dyno shop that the EVO intake system is good for 3-4 HP at best. I just tried to have one installed last weekend but my mechanic lacked some screws that were supposed to be sent with the kit but were not. He did de-snorkel it in the process and the sound is much improved. Curious from those who know how much better the sound is with the kit installed than with just de-snorkeling it. Combined with a B&B sport muffler, it's starting to sound like a real sports car.

As pointed out in other threads, this is really seems to be a relatively expensive mod to just get more sound out of the motor. Given that my car was so quiet when I first got it that I sometimes thought the engine had stalled at a redlight, I'm happy to be able to capture some of that 911 style roar when I jump on the throttle.

At this point just wondering if it's worth going ahead and installing the EVO intake or just leaving it de-snorkeled as is.

AtlantaBoxster · 11-14-2005, 11:52 AM

Thanks for the posts. It now seems that it is not a good idea to install an air intake kit. I feel like my bipolar medication is not working properly after reading these posts. From what I gather:

1) Evo air intake might give you a gain in HP but you could possibly lose HP as well.
2) Evo air intake does seem to give a more guttural sound to the car.
3) Evo air intake is difficult to install.
4) Desnorkeling gives the guttural sound without any cost or loss of HP.

Based on this, it seems that I am back to not installing an air intake kit and thinking about desnorkeling.

Are there any issues with desnorkleing? Is there any point in desnorkleing other than having that increased sound?