remap ?

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Feb 21, 2019 | 06:57 PM

1957buick

Thread Starter

Road Master

Joined: Jul 2010

Posts: 976

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From: northern nj

remap ?

I own an 08 UC and thinking of V&H TRUE DUALS to remove the heat from my wifes right foot . Do i need a remap or a dynotune ? The bike is stock except for slip on's , not interested in performance but going on a 4-6 week trip to cali , mid west , south west etc.... Anyone have real world experience ? THANKS

Feb 21, 2019 | 07:02 PM

BobRR

Road Master

Joined: Mar 2018

Posts: 804

Likes: 92

From: Texas

Quote:

Originally Posted by 1957buick

Absolutely you will need a remap. The remap is one of the reasons it will end up running cooler. If you do not remap it will run way to lean.

I have read, more than once, that these engines run better with a crossover, they will tune better.

Here is a link to a set of aftermarket headers that look like true duals, but have a hidden crossover and no catalytic converter. It is likely that these will run cooler than a set of true duals without the crossover.

http://www.rccomponents.com/rcxhaust...or-headers.htm

Here is a video which explains backpressure in the exhaust...

Last edited by BobRR; Feb 21, 2019 at 08:22 PM.

Feb 21, 2019 | 08:01 PM

Andrewwayne

Tourer

Joined: Feb 2017

Posts: 280

Likes: 79

From: Tennessee

I have the true duals installed ran with the Harley stage 1 map and slip ones. Had just a little decel pop. I would try it and see if your bike has the Harley map then. Buy a tuner.

Feb 22, 2019 | 01:11 AM

RK4ME

Seasoned HDF Member

Joined: Aug 2009

Posts: 9,242

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From: west Michigan

These guys will sell you a Power Commander with a pre loaded map for your bike. They really do make a difference.

https://www.fuelmotousa.com/c-120557...ASSIC%20FLHTCU

Feb 22, 2019 | 08:03 AM

hd4evr2008

Grand HDF Member

Joined: Jun 2008

Posts: 3,983

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From: Ohio

I have also heard from several good HD mechanics that a few years ago when true duals became the "thing to do", they discovered that they actually weren't as good as the stock pipes with the cross over. Just a thought. I think a good dyno tune by a knowledgeable tuner would benefit you more, and cost you less.

Last edited by hd4evr2008; Feb 22, 2019 at 08:08 AM.