Mention here also, after cat only!!!

http://www.fvd.de/us/en/Porsche-0/-/...Extension.html

 

I used to have an NSX, it has a frunk as well as a trunk . . . When the mechanic would open the two, he was always very confused. HaHa, good fun-- KH

 

Which ones did you use? PM me please.

 

Yes, but will it throw a code? No testing in SC, just tying to get rid of the code, no tune yet. I have shimmed my post-cat O2 but still throw a CEL.

 

it's hard to say..each car has different stuff going on obviously so ymmv, but i've had this tune so long i'm convinced my ecu thinks this is "normal" lol

but for me they did throw cels and i first just tried the extenders, then tried the 90 deg angled ones like dvd has. for me it was the decatting that caused it but after i swapped for new 02's i didn't throw cels anymore. the mini cats were for me, a hopeful experiment that failed.

 

Will you still get the proper afr with those?

 

afr is read precast not post cat. post cat sensors for reading the difference in afr from precat for emmisions