new pipes lol 

I had it cut off my original pipes and a piece of stainless tubing welded in, cost me about $50.

The bikes run just fine with the flapper valves " jammed" fully open in my experience

You can get used stock ex-US eBay downpipes easy enough ( nowhere near $600 to go that way )

The "Active exhaust" is a Euro requirement that we get landed with, Yank bikes don't have them !

Some of my mates have fitted the V&H 2:1:2 downpipes , but costly as you know

It's your dollar(s) as they say !

Thought ya can ya just get a tune and set the program for them to stay open , unless ya want it gone totally ?
How ya liken the stock headers without the cat man , big difference or not ?

My stock header pipe cracked where the active exhaust valve is welded . I removed the active exhaust valve and gutted the cat while i had the header pipes removed from bike. Check out ( "my pics ), for photos of work done.  Bikes is 2009 flht.   I could not be happier with the results.

Get dealer to disable the active exhaust valve via the ecm so no error codes are made.  If you have a more advanced tuner , you may be able to disable the valve that way.  When all is done , just cable tie the cable that went to the valve out of harms way.  

Grind off the flap, cut out the cat, Weld it up.

Louder and revs cleaner.

 Hey there, I've seen this done somewhere here before.

Fullsac Performance website has a few burnout clips of the end results , yehahhh !
Is it not true that some cat is preferable in road bike/ cruiser exhausts gas (is it called scavenging) expulsion , does anyone that has done this mod notice anything bad about it at all , like on deceleration for instance ?
What has been the result and info at dyno`ing , compared to stock ?
Cheers fella`s

Hi Scotti,

I'm no performance expert, we propably need some tuning and performance experts to give their opinions . There are many riders that have removed their stock headers and replaced them with custom , (no active exhaust valve, and no cat) pipes. Doing a similar mod on "stock headers', ie, no valve and removing the cat', should give similar results.  The custom pipe manufacturers may state that they will give better results on performances. The individual will have to make that decision with regard , costs, looks, and performance. Doing this mod on stock headers works for me.

With regard , can this mod do anything 'bad', in my opinion no, its been done a million times, and we would sure as hell know on forums like this if there were problems,  but then again the tuning experts may have other opinions.

From my research, just be aware, what model and year your bike is before doing  this mod on stock headers. My bike is a 2009 flht. The O2 sensors are located 'at the top' of the header pipes , near cylinders.  2010 and later have O2 sensors, (smaller and heated), located lower near the cat.  I was confident doing this mod on my 2009 bike because , all things being equal, I would'nt have problems with so called 'cross talk' between the O2 senors, ie , tune and performance.   This is another issue that the tuning experts may have other opinions

With regard dyno numbers, before and after mods, I have no info on this,  but no doubt someone here will .      

 

   

Yeah fella`s seen them being sold and heard of it being done regularly and get that aftermarket headers would mostly be cat free in design , plenty of info about it on here and other sites , just thought i read somewhere about it being a slight risk , maybe something in regard to loose shit being sucked back past the cat section on letting off or something , not sure exactly , but sure i did read something about it , that`s the reason i asked , thinking maybe someone else had heard anything similar in pros & cons , first concidered it meself on me `07 & again on me `09 a while back after lookin at the fullsac performance website burnout clip , cat and flapper gone is supposed to add near 10hp apparently , just wouldn`t want to risk any sorta chance of detonation as slim as it may be , if at all ?