cutting of cat converter

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sonomaextcab
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cutting of cat converter

Post by sonomaextcab »

I was told that cutting off my cat converter would give me more power and better gas mileage. Is this true and worth doing. I have a 98 sonoma 4.3L K&N fliter change and a modified air box, with custom exhaust.
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roadrunner
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Post by roadrunner »

Kinda depends on mileage on your truck and if is starting to plug as mine did or not. Mine was 30-50% plugged. Made a huge difference and no more MAF P0101 codes being set now. There are several other good posts on this subject. 8)

Correction added: Pre-cat not cat convertor. Sorry for the misunderstanding. :oops:
Last edited by roadrunner on Tue Apr 29, 2008 9:07 pm, edited 1 time in total.
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green02crew
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Post by green02crew »

Cutting off the catalytic converter would also set the SES light and not allow you to pass emissions. I'd leave it alone. The PRE-Cat would be one that you could do without.
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HenryJ
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Post by HenryJ »

We have a highflow converter. There are no gains in its removal or replacement if it is functioning normally.

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sonomaextcab
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Post by sonomaextcab »

ok thanks. i will leave it alone for now.