dr914jr

Remove the oil filler cap with the car running. Then cover the opening with the palm of your hand to check for suction. You shouldn't have any.

Spark plugs tell all. :(

Still no CEL? Remove the expansion tank cap and start the car. If you can feel compression gasses leaking into the tank you know you've got big problems.

Any smoke out of the exhaust?

I'm not sure about the tip. control unit but the ECU is under the carpet behind the rear seats. I'm willing to bet the tip. unit is close by.

Have you bounced the front of the car to see if you can replicate the sound? Or try turning the steering wheel back and forth after jacking up the front end of the car. This would eliminate several common front end problems as being the culprit.

The desiccator is next to the battery in the front trunk.

I have've had the RSS plenum installed for about two months now. After installing headers, intake, and plenum I can say definitively the plenum offered by far the most noticeable gains. The car is clearly more responsive and powerfull throughout the entire rpm range. I was very nervous about shelling out the $1000 but I have been very happy with the purchase.

Who "started" the car for you? <_<

Not much else it could be. But it's a fairly easy fix.

I would check the back of the temperature sending unit. It's on the far right side of the picture between the intake runners. Or it could be the engine compartment cooling fan. Has your temperature warning light flashed on a hot day? I'd out my money on the fan.

I use the K&N 63 series that has a heat shield. I can't say that it's instillation helped or hurt performance but the sound is intoxicating. The IPD plenum was the exact opposite. There was only a slight difference in sound but the extra power was very apparent. I was very impressed with how much thought went into the design of the plenum. You never know what you're going to get in terms of quality in the after market. It was nice not to be disappointed.

Ya he has a stock 6.0 with the SAP package. While numbers don't lie on the street it was apparent he had a slight edge due to his wider than factory rear tires. Traction is all that stops him from crushing me entirely. But after opening up the intake and installing headers the field is level once again.

I couldn't agree more that it's important to have a shield to protect the cool air.

I have cold air intake and plenum on my 99 996. I can say that the upgrades have given me the ability to hang with my friends 06 GTO.(He's not a happy camper.) The extra power is minimal but the sound is worth twice the money. :D

What about a failing injector? A failing lifter has a very distinctive sound. One that many 996 owners know all to well.

Have you considered an exorcism? :lol:

Thank God! I'm at 122,000 and starting to sweat it.

You should pour water down the drain holes and see if it drains quickly. I'm willing to bet you'll find that they are plugged. :)

Charlotte was awsome and a true example of how great it can be to network with hundreds of likeminded people. I had a blast.

My 99 996 C2 has 120,675 on it and was purchased at 55k. I've installed a k&n cold air intake,headers, and IPD plenum without a single major issue. This car was a better investment than my wife's wedding ring. :D

I once had a problem with my fan running long after the car was shut down because the engine compartment temp. sensor had fallen out of its grommet.

Any white smoke from exhaust or flashing CEL? :(

93k and counting :D

I drive my 99 C2 100+ miles daily and after 86,508 miles have replaced...

rotors x4,pads with sensors,clutch,flywheel,rear main"just for kicks",plugs,ICV,MAFS,tires,2 headlamp bulbs,poly rib belt,and an oil seperator. It has been very reliable and a much better commuter than my 75 914. :drive:

Pentosin makes a very good blue antifreeze used by some independent shops. ;)