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[mhjimh]

Was wondering if any one would now if a true dual head pipes with stock mufflers and stock A/C will work with out remaping on my 2007 FLHTCI?

[Hugh Janis]

are you looking to just change the noise?  It'll run but not optimally.

[iski]

George is right.  It will not run as well as it should.  Needs to be re-mapped to run its best after a pipe changeout.

[mhjimh]

No just the look, I shoud have said that I'm curantly running 2005 S/E touring mufflers w/stock head pipe now on advice from 3 dealer and it runs great but they did not now about a true dual head pipe.

[iski]

The crossover exhaust header pipe puts about 30% of the exhaust into the left slip on and 70% into the right one.

True dual headers change the output to 50-50.

[mhjimh]

I'm an auto tech so I understand how o2 sensors works, so I have to assume the o2's read differant from left to right since the ECU would be looking for a differant reading on the right from left.

[iski]

The ECM gets info from the O2 sensors and the exhaust temps will change since the output is 50-50.

[mhjimh]

So basically the ECM would be trying to richen the rear cylinder thinking it was over heating do to the 50% of exhaust and that would be out of it's 10% adjustability

[VaEagle]

You may find some interesting info in this thread?

http://www.cvoharley.com/smf/index.php?topic=9490.0

[rednectum]

going to duals at this point will cost you some of the low end tq you so desperately need.

[mhjimh]

Thanks for all the info. But it sounds like I'm just going to have to convince the wife I'm going the have to spend more $$$$$ on this bike, after all it has to run and look good!!!!

[iski]

You have your priorities in the right place.   

From experience, its easier to ask for forgiveness than permission when wimmens opinions are involved. New pipes are one of the necessities of life. 

[Break-In]

just tell you wife that you need this for the bike to run and sound better, works for me

[mhjimh]

My wife and me have been together since 1983 and I've been riding Harley's all that time, I don't really need an excuse to buy Harley parts, But I'll try that one just for a laugh. She is a real good biker ol'lady, it's all about the bikes with her too.