Passed NY Emissions inspection with no primary cats

[M3 2ENVY]

So i have a 2011 E92 M3 Comp with a ESS Tune and Test pipes, "primary cats" deleted Secondary cats still on. So after years of taking my exhaust down and putting the stock exhaust back on to try and pass inspection I decided to try something different, a friend of mine who has performance shop said let's try putting in "Mini Cats" in, I didn't think this would work but i said lets give it a try. So many people with the Primary Cats deleted on these cars have tried passing inspection and have failed inspection. But this setup worked. Stock tune, Primary Cats still deleted, "Mini Cats" installed, passed inspection Here's some photo's of the setup

[nycplumber]

I wonder how long those would last for

[M3 2ENVY]

Originally Posted by nycplumber

I wonder how long those would last for

Good question lol

[nycplumber]

If they dont last it's cheap enough that you could buy new ones each year or simply remove it after passing and install again before next test

[M3 2ENVY]

Originally Posted by nycplumber

If they dont last it's cheap enough that you could buy new ones each year or simply remove it after passing and install again before next test

Yea ill keep an eye on them for next year

[Gossypiboma]

Link for where you purchased the mini cats?

[M3 2ENVY]

Originally Posted by Gossypiboma

Link for where you purchased the mini cats?

The shop i went to had them in stock

[OmairK]

Fabspeed as really high-end ones that work well.

I wouldn’t know but just throwing out a suggestion. 😁

[sho9ice]

How many of the " mini cats" did u use?

[M3 2ENVY]

Originally Posted by sho9ice

How many of the " mini cats" did u use?

Just 1 on each side

[rhyary]

The suggested product is out of stock.

this is more expensive, will it fit?

https://www.urotuning.com/products/f...37966420574401

Does 45 deg better than 90?

[JR_914_]

Which shop was this because I'm having the same issue and my registration is almost due.

[M3 2ENVY]

Originally Posted by JR_914_

Which shop was this because I'm having the same issue and my registration is almost due.

Check out Real Auto Dynamics in Long Beach Long Island

[M3 2ENVY]

Originally Posted by rhyary

The suggested product is out of stock.

this is more expensive, will it fit?

https://www.urotuning.com/products/f...37966420574401

Does 45 deg better than 90?

Not sure if those will fit, but they used "straight" in my scenario.

[sho9ice]

Originally Posted by M3 2ENVY

Just 1 on each side

Thanks 😊

[jeff@autocouture]

Mini cat's can sometimes work but don't rely on them to pass every time. Just some food for thought. the 45 degree might offer more space between the heat shield & test pipe so the 02 sensor wiring can be maneuvered better.

[M3ZCPNYC]

I have these bought spares also just incase

[M3 2ENVY]

Originally Posted by jeff@autocouture

Mini cat's can sometimes work but don't rely on them to pass every time. Just some food for thought. the 45 degree might offer more space between the heat shield & test pipe so the 02 sensor wiring can be maneuvered better.

Thanks for the info

[M3 2ENVY]

Originally Posted by JR_914_

Which shop was this because I'm having the same issue and my registration is almost due.

Real Auto dynamics in Oceanside Long Island