kart125

Time will tell... but I doubt that just a coating on a matrix will change the sound significantly.

The point is that it's impossible to compare car exhaust sounds on different videos taken indoors, outdoors, cold vs hot engine/exhaust... iphone vs samsung vs professionnal mike, dead behind vs 3/4 back view... so many variables...

I highly wish that the canuck car will sound different than the EU cars, but realistically I think it will sound the same. Side by side video needed with same testing parameters please!

Archimedes

I'm not following this coating thing. A particulate filter is not simply a coating on metal. It is an actual filter, like a screen with channels that trap particulate matter. If that filter is in both EU and ROW cars that means the ROW cars have a particulate filter in them. Is that the case, i.e., has Porsche said this?

Also, I don't understand the argument that because the part numbers are the same, they're the same - except for a coating. If the coating is different, how can they be the same? Wouldn't the part numbers need to be different, so that they could tell the difference between replacements shipped to the EU vs. ROW? Could it perhaps be that the part numbers are just for the exhaust piece and not the filter inside?

sobiloff

All regions will have the OPF pipes with the screens inside them. Only the EU screens have a coating on them. The coating is what captures the particulates. Porsche ships OPF pipes with screens to all regions so the back pressure remains the same globally, allowing for a single engine map globally.

718GT4.0

😥

Archimedes

If that is the case, how can they have the same part number, one with coating and one without?

Also, it seems really dumb to ship cars with the filter but without the coating. I mean, if you're gonna restrict it like that anyway, why not just go the next yard and just coat the damn thing so it reduces particulate exhaust?

bk_911

Profit

Archimedes

Also, if the back pressure has to remain the same, how can aftermarket suppliers remove the filters without remapping the ECU?

718GT4.0

From earlier in this thread care of @Westcoast Definitely both have screens, but I wonder if the filter filament / coating actually thickens the filter grate /screens enough to further drop sound. Wishful thinking

StickShift964

Im excited to know the difference, if any, on the production versions.

JCR-Porsche

Part numbers are not the same, thats not what I said. I just said to check them out.

Another video of the same ‘non OPF’ car below, now it’s outside and not in the cold start function and revving to 5000rpm.


The sound is the same as the video I posted comparing stock to JCR

JC

JCR-Porsche

Cold Start / Inside Showroom / 2000rpm small blips


Operating Temp / Outside / 5000rpm large revs


Exactly the same car with videos captured on exactly the same recording equipment..

Now a EU spec car.. Skip to 0:16 - 0:30 for OEM exhaust valves open sound


Hopefully this now proves my point. Sorry owners but the US and ROW cars will sound exactly the same as the EU cars in stock form

JC

GT325

JC:


Does the 718 Spyder/Gt4 have integrated OPF cats and headers like speedster? Or will it be possible to keep stock headers cats and just replace/bypass OPF on USDM Spyder? Seems like on speedster to bypass OPF you need aftermarket headers and cats.

JCR-Porsche

The OPF’s are situated on the link pipes between the headers / cats and the rear silencer so a very simple solution to delete for the US / ROW cars. Our Titanium OPF delete pipes are to be launched very soon!

RS / Speedster OPF is integral to the header / cat as you mention so a little more work required

JC

GT325

That is great news JC. Eager to hear 718 with stock system and only OPF delete.

718GT4.0

I'll put this right here...there's hope for non-opf cars afterall. Doesn't sound as good as a JCR exhaust mod, but damn good enough for NA stock cars. This certainly points to euro OPF cars are more muffled with the metal coating in the OPF canister.

https://youtu.be/fA08PTEfb3s