Westcoast

Are you sure that there is an O2 after the PF, I have yet to see a picture that supports this, the O2 sensor pair are normally ahead and behind the cat, the PF doesn't have one that I can see.

JCR-Porsche

No o2 sensor post OPF, only the secondary pressure sensor take off, which, isn't present on the non OPF cars.

JC

2XIPA

Yowser.

Curious correct me if I’m wrong but it seems one could use a bypass pipe for the GPF and not trip any codes?

Westcoast

Did that pressure sensor affect the design of your Race Pipe or is included on it?

981Spyder_PTS

Has anybody disconnected the vacuum lines already to prevent the valves from closing from roll away to 70 km/h?

rzspyder

I’m no expert but could something like this be what we need? https://soulpp.com/product/porsche-7...treet-headers/

ajw45

​​​​​​Ah, I thought it was secondary o2 but as JCR posted guess it's not o2 but a secondary pressure sensor. Guess it'll be all good then for NA assuming the faux filter is seperate from the headers and cats....

JCR-Porsche

We're releasing OPF delete pipes which will not require any tuning and will not cause any CEL's etc. Simple direct replacement and enjoy the weight saving, sound and power increase.

The pressure sensor is only found on the EU cars with the particulate filters, the pressure sensors are pre and post OPF, our Titanium Valved Race Pipe is a rear silencer replacement so the pressure sensors do not effect in any way.

Yes the filter (without particulate coatings) found in the USDM cars is in the link pipes between the headers and the rear silencer assembly so its a quick and easy replacement. Our Titanium OPF Delete Pipes will be available very soon, including some really nice features

JC

2XIPA

Perfect, thanks. Hopefully a sound clip before and after.

JCR-Porsche

Of course, also compatible with the OEM rear silencer assembly for those who want to keep things a little quieter.

JC

bk_911

kfmcmahon

So no power loss despite less back pressure when removing the OPF (sans particulate substrate) with a bypass tube?

JCR-Porsche

Certainly not, we're not in the business of making cars slower

JC

n4v4nod

hf1

I may be in the minority but actually prefer the deeper, more growly and less raspy, less crackle & poppy sound of the 718 4.0 even with the GPF. Especially inside the car (where it matters) it sounds more GT3-like (even more Mezger-like) than the 3.8. Was never a fan of the fake 981 crackle & pops. Great to hear that the GPF and its usa counterpart could be easily bypassed with no cel or warranty issues.