Category: Engine - Exhaust
Price: $400
Private or Vendor Listing: Private Listing
Part fits: 2010+ G37 Sedan, 2008-2009 G37 Sedan
Location (State/Prov): OH
Item Condition: Used

Selling Fast Intentions High Flow Cats from my G37xS. Had them installed on the car last March; but I am putting that car back to stock to sell. These currently have increased in price and are backordered due to COVID- here's your chance to snag them with no wait.

Fits all V36 Sedans (AWD/RWD, 07-'15). No gaskets or hardware included (re-used on old G). Asking $400 + shipping.

 

Is it me, or the core already took some beating and started to "declamp" itself.
Looking at flange there was bad seal, oxygen was sucked in and it made exhaust gases hotter. This phenomenal accelerated damage.
O2 sensor was reading lean condition and was dumping fuel in to the cat...

 

No "declamping" that I could see, nor any rattling while the cats were installed. Wasn't a huge fan of the Z1 Gaskets that I purchased, but no codes were thrown at the O2 sensor while I had it on the car.

 

Hard to see since picture not the sharpest, but white ripples in metallic core usually means it it was pushed in.

 

The cell core of these cats is spun into position. IE a collaped/compressed core is inserted and spun to open tightly against the inside of the cat housing.
A small amount of play is possible if you bang the cat back in forth when in hand. I do not recommend doing this.
When on the car I do not think any movement occurs.
I have no idea how this manufacturing method compares to other aftermarket or OEM cats.
I was not keen on these because of this initially.
However, the folks at FI shared their process with me, and they were very helpful and transparent along with 10+? years of selling these.
I dont find many, if any, forum posts stating machanical issues with FI cats.
Ive had a new set installed for about 5000 miles.
I did have a lean code once last week. But I reset it and so far it has not returned.

 

Bump, price reduced to $400

 

Are these resonated or unresonated? Also any other pics?

 

How many miles did you put on these cats?

 

These are resonated- not a fan of the noise that comes with unresonated. No additional pics atm as I'm a consultant and been traveling on the road last few weeks.

Less than 3k. These were installed at the height of COVID, and as such I was working from home. I purchased a 6MT G35 Sedan in March of 2021 and the old G wasn't driven (outside of to the shop to get these removed and swapped for OEM) back in September.

 

sent you a private message about these

 

Pending sale to msi

 

payment sent! Thank you Deepan

 

I'm glad this sold so I no longer have to think about it!

 

You weren't alone.

 

OK, that was funny.