tune up after slip on muffler(?) - Harley Davidson Street Forum - Street 500 and 750
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post #1 of 4 Old 04-25-2017, 09:06 PM Thread Starter
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tune up after slip on muffler(?)

Hello everyone,

Just recently installed new slip on muffler on my '16 750, sounds great. like a harley is supposed to sound. I got it from tuffside.com (aka:chappell custom). my question is, should I tune up my bike now that I have change the exhaust system a bit?.
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post #2 of 4 Old 04-26-2017, 03:15 AM
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Are you Modifying the Intake?? A Slip On by itself shouldn't cause much of a problem. If you do other Mods, Yes get it Tuned. I used a V&H FP3 on mine. Had to change to a different MAP after I installed the VO2 Intake.

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post #3 of 4 Old 04-26-2017, 04:59 AM
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I also have the V&H FP3 along with high flow filter and SE Nightstick slip on mufflers. I have auto tuned and set the map. It made a lot of difference in power as well as a smooth ride in low gears.
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post #4 of 4 Old 04-26-2017, 08:36 AM
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I recommend re-tuning especially if you intend to add a high flow air filter at one point. My bike has the K&N hi-flow and a V&H competition pipe. After installing and flashing the associated map from the V&H FP3 Fuel tuner there was a significant difference in performance.
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