If I removed my cat, how much better power and gas mileage would I
get? Its pretty rusty and looks like it might come apart soon
anyway. From what I've heard, the early cats robbed a fair amount of
the vehicle's power. I have a 3.8l 231 cc V6 which has 110 hp (which
seems kinda low) and gets 21 mpg highway. Just curious about this. I
live in Wyoming so smog tests are not a big concern.
Bill Johnston ( snipped-for-privacy@NOSPAMyahoo.com) wrote:
I guess the minor detail that it's a FEDERAL crime to remove it doesn't
bother you. Nor does the increase in pollution or the fact that unless
it is plugged it isn't hurting the engines performance at all.
...plus, on some applications, the mpg may actually decrease! Had a
cat-to-rear fall off the exhaust pipe on a '77 Buick LeSabre, v-8 engine,
and the power dropped so radically, you'd think the cat had stopped up
completely--rather than the opposite. s
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