De-snorkeled my Box 5 minutes max

I've been reading this thread with some interest because I tried to de snorkle my '99 Boxster following the instructions you have posted here and couldn't get the snorkle to budge. I wiggled it and at one point had both feet on the car pulling on it but it wouldn't move an inch so I gave up. My mechanic wants me to put in a cold air intake system and he says it should come out if the intake system is to work correctly. All the reading I've done on the pros and cons are as varied as the experiences of the drivers. Some say an HP increase some say not, some say better sound some say your fuel system regulator will eventually compensate for the change and the sound goes back to normal. Although everything I've read about the snorkle goes along with the Swedes getting a knot in their shorts over the noise, and I'm no expert on air induction, it would seem to me that the tube shape of the snorkle would have an effect on air turbulance as the air is forced down the tunnel of it. It may even have the effect of increasing PSI on air entering the air filter box. It would be interesting to really see something definitive on this topic because although it has been widely discussed there doesn't seem to be any agreement on its benefits or drawbacks.

[sd_boxster]

Since a bunch of you have desnorked Boxsters that have the cup - has anyone ever found it full of debris? Seems like a question that bears asking...

Originally Posted by sd_boxster

Since a bunch of you have desnorked Boxsters that have the cup - has anyone ever found it full of debris? Seems like a question that bears asking...

There was nothing but dust in the tray when I got mine out. The second time around I grabbed the tray and the snorkle came out so easy I was amazed. I had pulled on the snorkle itself the first time and it wouldn't dislodge. What I've noticed is the car sounds more mellow, there's an intake noise that is missing but the upside is my gas mileage appears to have increased by one mpg. Combination around town and freeway I'm up from 22 and change mpg to 23 and change mpg and on a freeway cruise to Sacramento my freeway miles where up to 26 mpg. also up one mpg. :dance:

[JTP]

The Boxster's unique location for the intake may have an effect on HP losses or gains many have claimed. Unlike a front engined vehicle where the intake system can take advantage of the high pressure area naturally provided by forward motion, the Boxster's side mounted opening creates a low pressure at the intake opening as the vehicle moves forward. I suspect the snorkel places the intake opening at a point closer to the moving air than if the snorkel is removed. This would force more air into the intake system than with the snorkel removed. You can feel this effect easily by driving your car at 60 MPH and opening the window slightly. There is an immediate drop in pressure that you can feel in your ears. The area behind the grill feels the same drop in pressure. The higher pressure that exists at the opening of the intake dictates how much air is ingested into the engine. The odd shape of the intake area, with the snorkel removed, may cause areas of low pressure due to Bernoulli Effect of the moving fluid past the opening providing less air pressure at the intake opening. For this reason, it is possible the engine is getting less air with the snorkel removed.

I read the tuner's thread about the 17 runs he did, and on a stationary vehicle his claims may be correct but may not be correct on a moving vehicle due to the unique nature of the intake opening. A desnorkeled Boxster with a scoop on the side may give better results.

[Boxtaboy]

Originally Posted by sd_boxster

Since a bunch of you have desnorked Boxsters that have the cup - has anyone ever found it full of debris? Seems like a question that bears asking...

I've had my snork out for a year, and no extra debris in the air filter with the snork out. There's always some dust and small leaf remnants in there regardless of whether the snork is in or out.

[SoCalKen]

2 things that come to mind,
1: How long does it take for the computer to recalibrate to the new flow? could this affect a "before and after" dyno if done right away? The reaon I ask this is I have read about some modifications that raise the MPG but after about a week of driving the computer remaps and the MPG then below the original MPG.
2: Is it possible that the space behind the grill and the leading ege of the snorkel is big enough to slow the velocity of the flow just enough to allow some debris (water?) with weight to fall into the tray rather than a constant high velocity flow going straight into the filter.
Hmmm, makes ya wonder,
Ken

[gr8rcfan]

I've read several places, it takes 100 miles for the computer to recalibrate.

I've also heard the reason for the snorkel and cup are to form the first noise baffle, needed to meet European noise regulations. You notice the snorkel is quite small - smaller than any other part of the intake. If you perform any other mods, leaving the snorkel in place will have an even greater negative effect.

Go ahead, remove it, and enjoy the bark of Porsche WOT!