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Old 01-15-2020, 06:55 PM   #9
2LZ   2LZ is offline
 
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Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,092
The air injection doesn't rob performance, it's just unsightly. It's made to shoot fresh air on your cat under load to get it hot to burn the excess HC's that make it thru the combustion process.
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