Is it possible to get 330 HP from a 2003 3.2L Engine?

[KRAM36]

Just went out and checked some numbers this morning.

[edc]

Here's an AFR plot from a dyno for comparison. 4th gear WOT.

[KRAM36]

Where would I look for to fix the fuel tank ventilation?

[JFP in PA]

Originally Posted by KRAM36

Where would I look for to fix the fuel tank ventilation?

Fuel ventilation is the EVAP system.

[KRAM36]

Originally Posted by JFP in PA

Fuel ventilation is the EVAP system.

Thanks JFP in PA. I looked at this article on Pelican.

Pelican Porsche Tech Article - Replacing Your 996 Fuel Line Vent Valve / Bleeder Valve - Porsche 911 Carrera & 986 Boxster - Porsche 996 Carrera (1998-2005)

I do not get any of these symptoms and never had a fault code show up on the Durametric from it.

If you are having trouble filling up your car with gas, your check engine light keeps coming on, your car will not enter a “ready state” for a smog test, or you hear a howling sound like someone is blowing across the top of a Coca-Cola bottle you may have a faulty fuel line vent valve.

[JFP in PA]

Originally Posted by KRAM36

Thanks JFP in PA. I looked at this article on Pelican.

Pelican Porsche Tech Article - Replacing Your 996 Fuel Line Vent Valve / Bleeder Valve - Porsche 911 Carrera & 986 Boxster - Porsche 996 Carrera (1998-2005)

I do not get any of these symptoms and never had a fault code show up on the Durametric from it.

The system in your car is a little more complicated than just the one valve that was covered in that article:

[KRAM36]

I'm not sure where to go from here. It seems if you have a EVAP issue your car will throw a fault code. I also read it could be the gas cap or from over filling the tank. When I fill up with gas I stop when the gas handle clicks off.

EDIT: Just went out and looked at my gas cap. The seal ring has several cracks in it, a couple of them at least 2mm wide.


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[JFP in PA]

Originally Posted by KRAM36

I'm not sure where to go from here. It seems if you have a EVAP issue your car will throw a fault code. I also read it could be the gas cap or from over filling the tank. When I fill up with gas I stop when the gas handle clicks off.

EDIT: Just went out and looked at my gas cap. The seal ring has several cracks in it, a couple of them at least 2mm wide.


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EVAP systems can remain is the "fail" or "not ready" state for prolonged periods after code resets, battery swaps, etc. without registering a hard code or a MIL. If you do a search on the subject of getting the DME to reset itself before going to emissions inspection, you will find that some people had to drive the car for several or even many driving cycles and miles before everything reset to "ready"; during which time the car registered "fail" on the readiness test, but threw no codes, so do not expect the car to quickly clear itself if it is something as simple as a gas cap.

[KRAM36]

Roger that. Thanks!

EDIT: JFP if I still have your attention, what do you make of the RKAT numbers being so far off? I checked for air leaks and only found that one port valve that would stumble the idle.

Also Duramtric shows misfires in cylinder 3. I changed the coil and plug, but still get the misfires at idel. It's not throwing a code for the misfires and on the highway it never showed a misfire for about a 25 min drive, could it be the fuel injector?


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