Originally Posted by Teseo (Post 3221926)

Try out a rotary powered car with premix, catless car will smell like perfume after that

Originally Posted by Will BRZ (Post 3221817)

Good afternoon everyone,

Hope you are all enjoying your memorial day weekend. I'll be looking to do a couple mods to my BRZ this summer. Just want to give it a little bump in power so like everyone ever, I'll start of with headers and a tune. I was looking at catless UEL headers because they are a lot cheaper and have more variety than the catted ones. My question is if the pros to having catless headers outweigh the cons (smell, emissions etc.) I had a catless 335i and the smell has unbearable for me. I know it's a completely different engine so it might be a different experience. I don't mind a little whiff at cold starts or whatever, but I don't want to be suffocating in traffic or stop lights with the windows down. Would a dual resonated front pipe or something like the JDL Ultra Quiet help with this? Or should I just spend the extra $$$ on the catted headers? Also thinking about E85, but I'll figure this out first. Will be adding a lightweight catback and MAYBE an intake if it matters.

Also, if anyone in Houston knows how to get passed emissions please let me know lol. Had the catless 335i for a few months only so I never got to that point. All over the place lol but any extra advice or product recommendation is much appreciated. Thanks for reading

Originally Posted by new2subaru (Post 3221913)

I'd be more interested in what the people behind me are smelling when 3/4 throttle. If you smell it when stopping what are people smelling when you're full throttle? Maybe follow your own car and check it out?

I was behind a brand new Camaro the other day and holy feck did that thing stink! He didn't have enough HP he had to go full catless :/

Originally Posted by churchx (Post 3222062)

I wonder what happens when one drives through other state with different rules/regulations and is checked on the road by some traffic cop ..

Originally Posted by Tcoat (Post 3222083)

Technically the laws that not to tamper with emission control systems in the US are federal so it wouldn't matter where the car is from. The state laws that take things even further would only apply to the state where the car is registered though. This is one of the several reasons that people in California like to register their car to other states.

Originally Posted by Teseo (Post 3222103)

Another reasson for not visiting Cali

Originally Posted by Tcoat (Post 3222106)

Oh it is a great place to visit!

Originally Posted by StraightOuttaCanadaEh (Post 3222107)

If I ever went to the states, I think Cali would be the only place I'd visit lol

Originally Posted by Vital (Post 3222051)

Texas does not do visual or smog/emissions testing. All you need is tune to make sure there are no CELs as you cannot pass state inspection if you have CELs.

Originally Posted by Tcoat (Post 3222080)

A couple of years ago I attended a big classic car meet. At 4:00 when it was over about 300 cars fired up their V8, mechanical advanced distributer, carbureted, pre emission control cars and paraded down the road. The stench was unbearable. When you consider that well into the early 80s there were still many, many of these cars on the road and that they were not perfectly tuned and maintained as the show cars it shows just how bad it was before emission controls. A traffic jam back then was hell on earth that you had to experience to understand. So bad in fact that people died from it. The young guys that have never been exposed to those conditions will never truly be able to grasp the difference that emission controls have made.
I do not believe that a few "enthusiast" cars driving around catless makes any form of impact at all but just imagine if every beat up, poor running, minivan, Corolla, Neon, etc was driving around with no cats. Things would be hundreds of times worse with the number of cars on the road now than they were even back then.