Thunderheader
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Joined: Dec 2014
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From: HD
Thunderheader
I've got an 06 FXDWGI. 88 cu in engine with SE heavy breather, Vance and Hines Big Shots, and SE super tuner.
I want to get rid of the V&H Big Shots and go with a thunderheader. Will I have to have my ECM recalibrated, have it dyno'd and all that? Or can I just swap the pipes myself and run it as is?
I want to get rid of the V&H Big Shots and go with a thunderheader. Will I have to have my ECM recalibrated, have it dyno'd and all that? Or can I just swap the pipes myself and run it as is?
Road Captain
Joined: Jun 2012
Posts: 578
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From: Apache Junction
I'm sure it'll run without a "problem" but the MAP isn't going to be correct or running at optimal performance by any stretch. At that point there is nothing beneficial really. I'd be willing to bet the bottom will be a bit soggy and run a little rich. If you're good with a bit of loss in power and just want some sound then don't worry about it. I'm **** about how my machines run and that would bother the h3ll out of me. New pipe = New Tune in my book, no matter how big or small the change is.
Ultimate HDF Member
Joined: Apr 2008
Posts: 5,384
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From: Out on Deranged
I'm sure it'll run without a "problem" but the MAP isn't going to be correct or running at optimal performance by any stretch. At that point there is nothing beneficial really. I'd be willing to bet the bottom will be a bit soggy and run a little rich. If you're good with a bit of loss in power and just want some sound then don't worry about it. I'm **** about how my machines run and that would bother the h3ll out of me. New pipe = New Tune in my book, no matter how big or small the change is.
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