Hello! I was wondering which would give me the most gains, the Crawford cats, or the Fast Intentions Ceramic cats?

Thank you!

 

Any idea?

 

8,000 people here will say FI....

And I'd probably agree with them....

 

:0) yea im leanin there after doin some more reading. Its odd that they arent on the FI website...

 

check out ahero's review on the FI 300 cell highflow cats. He said he likes them & they do look really good. Im also considering getting these.
https://g35driver.com/forums/intake-exhaust/122425-fast-intentions-300-cell-metallic-high-flow-cats-pictures.html

 

i have the fast intentions metallic cats and extreme4377 has the fast intentions ceramic cats

here is the review for the ceramic cats"

https://g35driver.com/forums/reviews/121086-review-fast-intentions-hfc-400-cell-ceramic.html

if you decide to get crawford cats, however, make sure you buy new ones and not used ones. crawford just released a new version of their cats that have new bracings. the new ones are not suppose to crack like the old ones lol.

my top 3 choices would be, fi metallics, fi ceramics, crawfords

 

do you think the metallics can pass emissions (washington)

 

probably not, just change it back when u need to test.. not worth risking it anyways.

 

Yea.. im thinking FI cats because I dont want to have the burning gas smell at stand stills. I wonder if the FI metallic cats could pass emissions.. and also, would the metallic cats throw a CEL?

 

FI cats are my #1 choice...and either way they wouldnt pass emissions during the visual...save the oem cats and swap them out when needed.

 

cant go wrong either way

 

no cats will pass emissions

 

I don't have to worry about visual, cuz the place I go to don't bug my about that stuff. I've taken civics before with motor swaps. Their only concern is if I had a cat on or not. as long as the car had cats on, it could pass smog. I'm not sure about the metallic or ceramic cats. what would be the difference between the too.

Does one allow more flow then the other.

 

^^yes sir. the metallic cats are suppose to be more durable and are made for f/i cars. the fact that they are 300 cell (vs the 400 cell ceramic cats) means they will flow a little better. but to be honest, you shouldnt feel a whole lot of difference if any at all.

 

Gang,

What's the real incentive for buying non-CARB HFC's? All the research I've done tells me that the Crawford and FI HFC's are the best but neither will pass emissions. I've heard of other HFC's that will pass emissions and the performance gain on those is maybe only a few HP fewer than the illegal ones above.

So is it really just a matter of a few HP?

Thanks,
B