Anyone run high-flow Cats to reduce hydrocarbon exhaust smell?

jbc426 said
I agree about the fuel being burned as it relates to the fumes. I am running this car on 91 octane California pump gas, and the fumes are obnoxious. My 1970 E-Body burns 101 octane Street Blaze. Those fumes smell wonderful. I get compliments on those fumes all the time.

dano said
I plan to run cats too. Reason being is I don't want to smell like exhaust and I intend to enjoy my car with my family including my kids and I'd prefer to not destroy their brain cells with CO, CO2, NOX and HC gas emissions. I'm also not concerned with the 10 hp I'll loose at 6000 rpms from it.

Plus you get the added benefit of your and my children having cleaner air to breathe...nothing worse than getting behind an old logging crummy at a red light with bad rings and crap jetted holley making the air unbreathable and your kids choke...being from PNW, I am sure you know what I am talking about:eek:

Cudafever said
Im old school and say "F" the cats!!!!!! but if you're using a computer and injectors, that will set the trim by reading the o2 on both side of the cat. Use the pre and post o2s as it will keep the cat tuned and will last A WHOLE LOT LONGER!

I missed something, the only way I know how to tune a cat is to take its guts out and string your guitar with them, otherwise, its just a metal can filled with ceramic honey comb and precious metals, no way to tune it.

jbc426 said
I agree about the fuel being burned as it relates to the fumes. I am running this car on 91 octane California pump gas, and the fumes are obnoxious. My 1970 E-Body burns 101 octane Street Blaze. Those fumes smell wonderful. I get compliments on those fumes all the time.

101 doesnt have any alcohol in it nor any fuel conditioning/cleaner in it thus the sweet smell of performance...