Decat Pros and Cons?

speirmoor

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My Dominator is running really well and I'm hesitant to mess with it but I do like the Decat pipe. Would all remain equal with a straight swap or will I need some remapping or other work?.
2016 model with Shorties, One7's coil and spark leads otherwise stock engine
 
Should be a direct swap . No remap I have read from a Norton reply. They do make a slightly deeper exhaust sound.
 
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might be the case for the domi, but for my Commando Euro4, there is a different mapping for stock, shorties with cats, and shorties without cats...
 
Reviving this thread to ask
Is the crossover decat pipe preferable over the non cross over?
 
When I put the shorties and decat on my 2016 commando sf I could tell the difference immediately. Even while riding it on the stock tune. But, When I sent my ECU to Indian of Orange County at that time and had them reflash the decat tune, the difference was night and day.

On my 2016 domi naked, I had Indian of Orange County install the megaphone tune before they shipped me the bike. I rode the bike about 10 miles with the stock catted long mufflers on the megaphone tune and once I installed the megaphone exhaust I could feel the difference in the low end torque loss with the open megaphone compared to the catted exhaust. But that’s because of the loss of back pressure with the megaphones.

I would absolutely ditch the cats and get the tune done. It sounds better and is a noticeable increase in feel even if it’s just a small amount.
 
Reviving this thread to ask
Is the crossover decat pipe preferable over the non cross over?
In theory it is. I am running the crossover , but have purchased the non-crossover before Norton went out of business. I haven't tried them. I doubt it will make much difference cross or no cross . All of my tuning work with the Dynojet PCV was done with the cross decat pipe .
 
Reviving this thread to ask
Is the crossover decat pipe preferable over the non cross over?
I forgot to mention , I think the construction of the newer non-crossover decat pipe will be less prone to cracking . These cracks will appear over a long period of use/miles. The cracking starts at the pipe welds where they " Y " out . The newer decat pipe uses an upper and lower welded on bracket which bridges the pipe welds . Without more miles of test can't be sure , but its what I think . If someone has experience with both cross or non-cross over decat pipe please chime in . Or If you've ridden both , please chime in. I remember that FE had the non-cross decat pipe on his bike , others too but have seen them here in a long time. :(
 
I forgot to mention , I think the construction of the newer non-crossover decat pipe will be less prone to cracking . These cracks will appear over a long period of use/miles. The cracking starts at the pipe welds where they " Y " out . The newer decat pipe uses an upper and lower welded on bracket which bridges the pipe welds . Without more miles of test can't be sure , but its what I think . If someone has experience with both cross or non-cross over decat pipe please chime in . Or If you've ridden both , please chime in. I remember that FE had the non-cross decat pipe on his bike , others too but haven't seen them here in a long time. :(
 
Also forgot to mention , I would get rid of the newer bike one piece cat box just because you can't change/drain the oil sump without taking it off. This alone would require for me to remove it !
 
I did have the none crossover type Tony. Theil does an excellent de cat none crossover pipe.

I suspect the crossover type might be a bit quieter as each bang has two silencers to pass through.
 
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