Anything that reduces flow restriction helps a turbo setup. With high-flow cats, a big difference you'll notice with most turbo setups is the spool-up time. A lot of the big turbo kits for the Audi/VW 1.8t engines, for example, utilize high-flow cats in order to reduce the turbo lag from the larger-than-stock turbo.

 

Geez have been anxiously awaiting these. I really thought (expected) these would yield higher gains than 3-5 rwhp.
I'll look for the dynos.
What about the sound - are they MUCH louder ?

 

Dynos later this week or early next week. The sound is louder. Enough to notice, nothing major though. When I say 3-5, I mean 3-5, not like when some say 15-20 and really mean 7-10. But let us do the proper dyno procedure first. We have seen 3-5 already from the pre-production set. These are the production set right out of the jig.

 

which is why I am considering these or Test pipes

switching them for an inspection 1x every 2 years is EASIER than changing the oil

 

While i agree that switching them out is pretty easy, I personally like to consider the environment when reasonable. Running a street car without cats seems, to me, a bit environmentally irresponsible. Don't get me wrong; I do love power, but cats are one of those things which do a lot of good. There are a lot of emissions regulations on cars (especially here in California) that I think are needless or excessive, but cats are not one of them. Just driving behind a car without cats makes me sick to my stomach. The exhaust smell alone coming out of those cars is worse than diesel.

 

jreiter,

Well said. I too love more HP, but not at the expense of the environment for the current and future generations.

 

My understanding is that these are Free flow CATs and do reduce emissions. Will they smell like cars that have no cats ?

 

They will run great but smell like your cat litter box!

You can replace your cats based on mileage to. It sounds like Ohio and CA are very similiar. Too many damn laws, I think I will go wipe my butt with a spotted owl to save a tree. Meanwhile HUGE plants billow up into the sky more ozone damaging pollutments than an entire track day in one hours time.

 

You must have one hell of a cat!

 

She is a 4 month old kitten and I think her mission is to annoy me at all costs. She is in my face as I type.

 

These free flow cats smell too ?

 

I was just funning, If Doug made them I would go with them over RT's over priced ones, his work is backed by 20 years! I have his plenum on my car and if L/T's were available here I would use HIS too in a NY Minute!

 

Mine had an odor for two days... then back to a stock scent!

 

ok ok ok anyways how much do they weight? and have you weighed the stock cats... BRICKS i tell you...

-non

 

Yup, this is one of those little facts that many people are not aware of, and you *never* hear of it when the hardcore environmentalist people are freaking out. In most large urban areas (Los Angeles, for example), vehicle pollution only accounts for something like 5% of all air pollution. Then, to top it off, the vast majority of that vehicle pollution (80% or more!) is caused by cars which are out of tune and gross polluters. (Nasty, old, beat-up cars with engines that have no emissions control, misfiring cylinders, belching smoke, no catalytic converters, etc.)

 

Mine is 5 months and loves to play havoc on my fake trees. He pulls out all the fake moss.

 

alright already...my mod addiction is looking for the next hit.

How much for shipping to SoCal?

 

Call Doug in the AM - 615-327-4159 8AM CST.

www.crawfordzcar.com

 

any info on weight of this versus the stock cats....

-non

 

ummmmm.... weight????

-non