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Old 05-28-2015, 10:40 AM   #1
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Tuning question

Stock airbox
Mike Rousch tune

I want to add X pipe and high flow cats. Will that affect my tune?
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Old 05-28-2015, 12:04 PM   #2
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Yes you will still need to have the rear o2's turned off as well as COT and the o2 sensor heatings possibly. Also if you're looking for performance gains high flow cats will do little for you. Might as well go off road.
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Old 05-28-2015, 12:27 PM   #3
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Going for more growl.
if I keep my stock cats, will the x pipe sound better? I have GT500 axle backs.
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Old 05-28-2015, 12:29 PM   #4
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Don't know. You'll have to go on youtube and see if you can find that same exact exhaust combo.
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Old 05-28-2015, 03:47 PM   #5
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If your keeping any cats you will not shut off rear o2's and cot. ?? All it will do is change sound. Your existing tune should be fine. Grabber...
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Old 05-28-2015, 03:58 PM   #6
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Usually high flow cats still throw codes
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Old 05-28-2015, 04:30 PM   #7
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Quote:
Originally Posted by zinc03svt View Post
If your keeping any cats you will not shut off rear o2's and cot. ?? All it will do is change sound. Your existing tune should be fine. Grabber...
Quote:
Originally Posted by natestang07 View Post
Usually high flow cats still throw codes
Correct on all counts.
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