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HMF Exhaust for 550 XP

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Old 02-12-2010, 04:20 PM
muddynoodle's Avatar
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Default HMF Exhaust for 550 XP

Do I need to buy an optimizer if I install an HMF exhaust on my 550 XP?? Any ideas appreciated!
 
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Old 02-12-2010, 06:01 PM
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I would assume you would
I installed an HMF Swamp XL and UNI filter on my Thundercat and my air/fuel ratio is way off so a Power Commander V is my next purchase
If you put an exhaust on without adjusting your fuel flow you wont get the best results thats for sure...Only sound...which is also good
 
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