pbeezy

Hi everyone. I have a non-PSE 991.1 S. I bought a used PSE muffler. I've read all of the install posts - I think I can do this "factory style" and do it right. But I do have one question... instead of running the vacuum tubing from the COV the way it is outlined in the Porsche retrofit bulletin, could I just extend the passenger side non-PSE muffler side tubing to the center point PSE muffler connection with one simple extension?

I guess what I am asking is - if I don't need my install to be "factory style" to feel good about the setup - but do need it to be functional - wouldn't it be easier to never have to get into the engine compartment and route the vacuum hose through the oval heat shield piece - wouldn't it be easier to simply cap one of the non-PSE vacuum lines and extend the other to where I need it to go on the PSE muffler?

Thanks for your help and advice.

polobai

What controls the vacuum line you are speaking of? If it’s not controlled, then the pse will be open all the time.

My991

I’ll be doing the same update, let us know how it works

AdamSanta85

Yes you can definitely just extend that line.

The factory line is 4AN PTFE lined stainless hose. Goes for like $5 a foot, that Porsche charges like $80 a foot for.

pbeezy

Thank you. Agreed on the tubing - I think I'm going to use some silicon tubing from Summit Racing.

From what I understand, if I plug/clamp the native tubing from the non-PSE exhaust and don't connect any tubing to the PSE exhaust, it will be in "PSE on" mode at all times. Would there be any issues with this from the vacuum pressure perspective?

AdamSanta85

No issue if you run it with the vacuum plugged, I currently have my car running like that right now, PSE full time.

abujax

i'm either dumb or lazy (or both?), but i can't seem to find the official porsche retrofit bulletin online -- any chance someone has a link handy?...any particularly helpful forum posts would be appreciated as well (i've searched a bunch and found many references to threads, but can seem to find the threads themselves)...this is for a 991.1...thanks in advance!

Visual

Here you go, I had this saved on my computer.

abujax

thank you sir!

abujax

one more question -- anyone know where to buy the pse center console switch (for 991.1)?...i've checked fabspeed and flat six but can't seem to find it...

My991

Suncoast sells everything needed

bb964

Any dealer sells them and this one seems to be lower than most (for the switch I priced) https://www.delawareporscheparts.com/
Make sure they take your VIN and provide the correct part number accounting for all the other options in your car.