It's not the n75, the chances of that going is difficult. The evoms intake blows maf not because of the oil but the screen mesh that's missing. The air is to much and it needs to be flatened out. Have u tried to unplug your maf? If it runs good then you blew it. Go to a store and by a strainer make sure the holes are opened enough then install it over the maf pipe and clamp it down.

 

Had a similar issue a few k miles after replacing the plugs. Going after the issue the same way, went to replace the plugs took them out strangely the plugs loosenened up ( being pretty **** I always use a torque wrench installing them). Putting them back and re-torquing resolved the hesitation.

 

split here is a DIY'r and knows what he's doing! if it was me? after 15k miles and 2.5 years? i'd sure throw some new plugs at this thing! for 40 bucks for the lot! lol..and at least look at the coils, for those hairline cracks.

 

Sittin next to me on the desk as a matter of fact...

 

not surprised

 

Agreed guys, In your situation I'd swap them $40, no brainer! I'd be interested if you can note whether the existing plugs were loose or not? I just wanted to share, it seemed odd.

Easy to sound like a fool without context . At the time I did log the engine parameters on some high power pulls and shared with my tuner Kevin. He compared with archived data on my car and said spark plugs and indicated around 4k is when you see that sort of thing.

The car is not a daily driver, no biggie for me to experiment (my background is R&D). I've done plug changes many times, I do not let the plugs go much passed 12k for regular maintenance, I think Porsche NA service intervals for plugs and oil are crazy long.

 

me either. 10 k MAX.

100% agree. and oil.. and trans fluid.. and plugs etc etc lol.

maybe they make "more" money by "waiting"!? ya think?!

everybody's hustlin'

 

I think the excuse for this is the powerful green lobby in Germany (less oil waste ect), but cynically this also plays into VW/Audi planned obsolescence model

 

Ngk spark plugs can go to 20k plus but there pricey. Cheap spark plugs can't go that high.


I just cleaned my throttle body wow it was dirty.

 

agree! its "built' in to the ultimate long term "plan", how many of these, although potentially capable, do we REALLY think they want to last to over 400k miles+!?

i say, one for the press coverage.. and the rest can bite the dust lol

good point.

 

If ur running an evoms intake with an oem maf best thing u can do is get rid of the evoms intake

 

Update coming this afternoon...

 

I always get this same missifring after being on the same plugs for more than 4k miles. I think the ignition system on the 996 is just weak (or maybe mine is just weak).

I always gap my plugs down really low (0.020) and it fixes the problem until I have to get new plugs again.

 

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Updates Updates Updates!!!
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So it wasn't plugs. See some pictures of the plugs below, had several thousand miles left on them, a little sooty but not bad by any means. Mechanic said the same thing.

The problem was something in the fuel line was stuck. They took apart the line and forced some compressed air down the line and found something was stuck. They got it out of the line, replaced the fuel filter (which was like all black according to them), and found that the sending unit was completely fried in the tank.

Adam and his team @ Ace Motorsport in Vista, CA took care of it from the get go. They figured it out within a day and had it fixed once parts arrived. The car drives like a madman again and all is well.

THANK YOU to everybody who has helped in this thread (as well on other boards ). Pictures of the old plugs below for those who don't believe me

 

Those do not like the right plugs. IIRC the recommended plugs are of the two ground electrode style.

Gap looks a might inconsistent too. Probably comes from running the single electrode. Erosion of the center and ground electrode tips.

Also, note the discoloration all the way up the threads. Those plugs are due to be replaced.