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So today my dealer told me that the canisters of my car are empty inside, there's no filter. So is it possible that EU have the monitored one, US have a filter (because California rules?) and Rest of the World get empty canisters?.
My canisters are part No. 982.254.350.N & 982.254.351.N , somebody have looked inside this ones?
according to the C&D article the difference between the the two are that the (in)active filters are not coated with the material that captures the particulate, the active filters are so coated,
and have sensors downstream (of the filter grid) in order to measure the remaining particulate flow
So today my dealer told me that the canisters of my car are empty inside, there's no filter. So is it possible that EU have the monitored one, US have a filter (because California rules?) and Rest of the World get empty canisters?.
My canisters are part No. 982.254.350.N & 982.254.351.N , somebody have looked inside this ones?
So today my dealer told me that the canisters of my car are empty inside, there's no filter. So is it possible that EU have the monitored one, US have a filter (because California rules?) and Rest of the World get empty canisters?.
My canisters are part No. 982.254.350.N & 982.254.351.N , somebody have looked inside this ones?
Here in Canada mine arrived with 982.254.350.Q & 982.254.351.Q
Yes, that might be truth. I have agreed with the head of the workshop to check it out at my next oil change.
Still there's a good chance that the dealer is correct as there are three types, so i'm wondering why Porsche would have a third speccificatio if that one will be the same as the US spec
Yes, that might be truth. I have agreed with the head of the workshop to check it out at my next oil change.
Still there's a good chance that the dealer is correct as there are three types, so i'm wondering why Porsche would have a third speccificatio if that one will be the same as the US spec
Here in Canada mine arrived with 982.254.350.Q & 982.254.351.Q
From what I believe the Q are US spec, P are EU spec, N are South Africa & Latin america. Even might be a fourth spec with the letter L which seems to be for Asian markets (not sure thought) .. so there's a pretty good chance that the dealer is right telling me that my car doesn't have anything inside. Mindblowing because I'm not satisfied with the sound and I was convinced that the OPF was the silver bullet to sound enjoyment...
From what I believe the Q are US spec, P are EU spec, N are South Africa & Latin america. Even might be a fourth spec with the letter L which seems to be for Asian markets (not sure thought) .. so there's a pretty good chance that the dealer is right telling me that my car doesn't have anything inside. Mindblowing because I'm not satisfied with the sound and I was convinced that the OPF was the silver bullet to sound enjoyment...
Perhaps the term "nothing inside" is misleading, no active catalytic process to burn off the particulates but still with the same physical configuration matrix as reported by Road and Track to maintain the sound and flow characteristics of the EU version.
Perhaps the term "nothing inside" is misleading, no active catalytic process to burn off the particulates but still with the same physical configuration matrix as reported by Road and Track to maintain the sound and flow characteristics of the EU version.
+1 ... this is also what C&D stated... no active OPF material in the non EU pipes...
Just wanted to do a quick update on this. So I have confirmed that the "N" OPF types also have a filter (south africa / latin america), see pics below.
I have no official reason as for why Porsche made so many variations of the non-monitores OPF, the only logic thing that I can think of is the convenience of having different codes, so if, in the upcoming years, some markets do a regulation change, would be easier to do all the adjustments having the part numbers already coded differently (specially thinking on the more long term production of the 4.0 GTS).
No, they are not monitored (same yours). This filters are as restrictive as cats. So this explains the big power gains on the lower band of rpm that akrapovic publish at their website.
Just wanted to do a quick update on this. So I have confirmed that the "N" OPF types also have a filter (south africa / latin america), see pics below.
I have no official reason as for why Porsche made so many variations of the non-monitores OPF, the only logic thing that I can think of is the convenience of having different codes, so if, in the upcoming years, some markets do a regulation change, would be easier to do all the adjustments having the part numbers already coded differently (specially thinking on the more long term production of the 4.0 GTS).
Happy to help my friend, nice to see you doing a deep dive on this and sharing it with the community. I'm quite confident that you're on point with the reasoning as well
Best regards,
John Gaydos
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John Gaydos- Owner, Performance Specialist
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No, they are not monitored (same yours). This filters are as restrictive as cats. So this explains the big power gains on the lower band of rpm that akrapovic publish at their website.
I guess we will soon see, there has to be a number of us starting with this as the first part of the exhaust to be replaced...
08-27-2020, 11:56 PM
