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#4
05-27-2010, 09:59 PM
Hummer Guru
Join Date: Jul 2006
Location: Stouts Creek
Posts: 4,192
Re: Exhaust Headers & Catylatic Converter
You can do it. The transmission dip stick and some of the nuts are tough but its doable. Leave yourself a day and start early...
As far a mpg its hard to say I later added a billy boat performance exhaust performance air and hydrogen booster so its all muddy water. I opted to leave in the cat since here in NJ the regs are difficult.
You will notice better low end performance with the header
Have fun!
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