lepooj

Hi

I want a better sound but i want to avoid tuning my 991.1 turbo s

I know theres 02 spacer but how well does it work and does that work with full catless?

THanks

Kyrosnick

I'm about to find out. Need to install them to pass emissions in July. Came with 3 different sizes, so may take a few trial and error. Using the vibrant ones with the adjustable orifice size.

Ttz06vette

Smallest diameter hole and you should be fine. I've passed 3 years now catless.

aft86

I don't know why but these extenders are hit or miss. They never worked for me, even with the smallest adapter. I tried two types, the Vibrant J adapters, and the ones with a tiny catalytic. The only thing that worked too get rid of the cel was a cobb pro tune before green speed took effect.

I also tried a set of resistors wired into the o2 sensors. Those worked but then I couldn't pass inspection because the monitors would never go ready.

akrapovic

I used these with the smallest insert

https://lakecityperformance.com/vibr...justable-jets/

jspigott

I have the Soul catless pipes on a 991.1 TTS. Installed the Soul O2 extenders shown below. Used the middle-sized insert and would get a CEL every 2nd or 3rd drive. I swapped the inserts out for the smallest ones shown below and have been CEL free. I believe Vibrant has basically the same O2 spacer kit as the Soul.

vtec_

Are you mechanically inclined? Do you have access to a bench grinder?

lepooj

no sir, but i see theres just parts i can buy

vtec_

on most cars made after the year 2000 I believe, these o2 foulers "semi" work..the trick is to adjust them at the right height to get it to work just right.

I had to grind and grind to get it just right on my EP3 Civic and I suspect it would be similar on these cars. Obviously not an apples to apples comparison but still the same principle

TAGMotorsports

They certainly are a "hit or miss" endeavor.

Kyrosnick

Just put the vibrant ones in with smallest hole. A bit more of a pain as could not turn the drivers side one in without taking the cat pipe off, so had to undue that, but no biggie. Took maybe 2 hours start to finish to install them.

Now to put wheels back on and some miles to see if it works.

Kyrosnick

Just scanned codes, and all ready, no CE lights. So appears to be good. Driven about 300 miles with them in.