If you put on a high flow air intake, but keep the stock mufflers ,do you have to remap?

 

Not usually, might want to consider going the external breather route also.

 

From the factory they run lean. So yes I would remap.

 

More air means leaner. Leaner means hotter. Hotter means problems.
Protect your investment. Get a tuner. Power Vision and Fuel Pak3 are idiot proof.
you can remap when you change exhaust. And you will.

 

You do the engine no good by increasing the intake without the exhaust. Breathe in, breathe out. Do as 71on72 suggested.

 

If you change the filter yes. You can go the opposite way and just change the mufflers without a remap because you haven't changed the air/fuel ratio

 

Your answer is no you don't re map. Just have a cool looking air cleaner, have friends who changed the mufflers to without doing nothing, there seems to run fine for them, me if I did that I would re map.

 

I'm a bit ignorant on some of this, but wouldn't that depend on what filter you remove?

Just changing the filter, even if it's less "restrictive" won't introduce more air into the engine unless the filter that was there in the first place was restricting it- right?

I've heard, for example, that the stock air filter on my 2014 Limited isn't restrictive (based on what I've read on other posts on this forum), so if in my situation, if my filter isn't restricting air intake, putting on a less restrictive filter wouldn't change anything.

But like i said, I'm not anywhere near an expert here................

 

Its not the filter, its the backplate. As I understand it, the orifice in the stock back plate is smaller than the throttle body opening. That is how air is restricted. When you go to a high flow intake (notice I said intake and not filter) the orifice on the backplate is at least as big as the throttle body opening.

I am thinking, now, that the reason the stock backplate is restrictive is because of the stock exhaust. If I un-restrict the backplate, will the engine suck in more air or will the exhaust ultimately determine how much air the engine can suck in? I think what will happen is, the engine WILL suck in more air, but the back pressure in the exhaust will increase. Either way, I think I just convinced myself ,with the help of the comments, (thank you) that I should remap.

 

I assume when you said changing to high flow intake you are doing more than a filter change. Remap is necessary.
Best $300-400 you can spend.

Next step change the exhaust. Even Slip ons will make a big difference. Stock comes with EPA Compliant mufflers that are very restrictive. Most riders replace with non- compliant mufflers to get more sound and more air flow. More air flow in. More air flow out.

I put Screaming Eagle Slip Ons on my 103 ci dyna. Which are EPA compliant. Mainly because I live in Commiefornia. Even they made a big difference in power. Others can tell you about Vance & Hince EPA slip ons. V&H and Fuel Moto have a map to match.