NEW Options for 2-into-1 Exhaust AND Auxiliary Fuel Tank for KTM 990

Installed!

Since I put the new intake and pipe on, it was time for a re-map and dyno. I had Nels from 2 Wheel Dyno Works (http://2wheeldynoworks.com/) in WA do the job. Very experienced with KTMs and highly recommended! The bike runs amazingly smooth now, no more herky-jerky throttle response like it had with the stock map, intake, and pipes. MUCH more power and faster response compared to stock.

Results:
90HP at the wheel and 60lbs of TQ. HOWEVER...keep in mind that I was running a kevlar lined Mitas E09 Dakar knobby, Ultra Heavy Duty tube (6lbs for the rear), and my chain is shot, needing to be replaced as it's stretched and loose. So, I think if I had a regular tire, tube, and new chain I could easily get more HP....but she's plenty fast now!

With everything installed, it's time to go out and have some fun!!! Covered about 400 miles of dirt on Sat/Sun and the bike ran like a top! Looking forward to that spare fuel tank though....gas stations a few and far between out here!

It seems though that it lost a fair amount of ponies with this 2-1 exhaust. A stock 09+ 990 should make very close to 100hp on the back wheel. Would just the non street tyre amount for that much hp loss?

That's a great question. One of the guys I ride with a lot did the Rottweiler Intake, SAS, Canisterectomy, and has dual Akrapovic pipes with the baffles removed.

He also went to Nels with a knobby and regular duty tubes and dyno'd at 96hp and 62lb of TQ. If I had regular duty tubes and a new chain (still keeping the knobby) I think I could get 92/93hp so I'd say the HP loss of the 2-into-1 system is probably about 3/4hp over 2-into-2

Do you happen to have AFR measurements?
Also do you know if said dyno is inertial or eddy current (brake)?

Also, the 2 into 1 was supposed to make better low and mid but wouldn't breathe as well on top so can you say if your feeling or seeing this on a dyno? or does it all feel the same? that pipe is just beautiful especially on your bike IMHO!!

I really don't get it. I've had a two into one system on my 2006/7 SE for 9 years now, that cost me $75 worth of welding of the stock pipe "U". And I accomplished getting some decent low end torque for the woods. And made room for the left stock canister to be a reserve tank.

You've spent what? About $2,000 to lose some horsepower and get a pipe that is probably too noisy. And made of carbon fiber, so when you crash, it will self-destruct. And you still don't have a reserve tank.

Am I missing something?

It is definitely pretty, though!

Not everyone is a fabricator and you are hauling around 15 extra pounds everywhere you go!

I have used my SE in the woods (mostly the Pine Barrens of NJ) for the past 9 years. I have dropped the bike at least a dozen times, and never once regretted having the solid steel bumpers in the back, that are basically bullet-proof. The bike has more then enough power to get it's 425 lbs. around, even with the heavier exhaust canisters (which are lighter now that they are gutted).

Seems silly to spend so much money for noisy canisters that require better ear plugs. And a pretty carbon fiber exhaust will not like being dropped.

Certainly, if you are making your SE a street bike, then a prettier exhaust will definitely be appreciated when you park it in front of the coffee shop. Otherwise, a waste of money.

And as far as the heat is concerned, people pay good money to have a heated seat. The SE comes that way from the factory!

looks good! love the idea

Too bad no spark arrestor!??

no good for many of us

AJ

Well, I'm not quite sure if you didn't read through all the posts or maybe I didn't communicate some things well as I could have, but this was nowhere near $2,000. The whole set up is $800 for the Stainless Steel and $900 for Carbon Fiber. I chose the carbon fiber because I like the look, the weight reduction, and I'm honestly not worried about damaging it because I run a full pannier system which will protect it in any get offs. It's pretty thick stuff too; it's not potato chip thin like some other carbon pipes are.

If you shop around and compare prices, you'll see that the option at ADV Tank is $760 & the Remus Roxx system is $840, so the Rottweiler system is right in that ballpark AND the quality is much better, especially on the collector. Not to mention BOTH the muffler and the 2-into-1 collector are MADE IN THE USA, so any extra dollars this cost me goes right into our local economy.

As far as "power loss", I know I've GAINED power from the stock setup I had. In addition, I did mention that I was running a kevlar-lined heavy knobby tire, a 6lb UHD tube, and a loose chain that needed to be replaced when I hit the dyno. All of those things will slow wheel spin up and cost HP, none of which are related to the Rottweiler 2-into-1. Given all of that, the fact that I was only 6hp behind a full 2-into-2, non-baffled titanium Akrapovic system at about half the price is in itself noteworthy.

I WISH I had your metal fabrication skills my friend. To be able to customize your own bike, gut your pipes, convert one to a storage tank and make your own collector is truly a valuable, money saving skill. Unfortunately, not only do I not have that knowledge base, but I don't have the tools, garage, or fabrication equipment either. So, given that, this was the best option for me...cheers!

Isn't $1,700 almost my $2,000 estimate? Or do you mean the whole 2 into one with the carbon fiber is $900? That's a pretty good deal. Regardless, you are right. I was lucky to have a buddy who was willing to cut out the cross-over curve, reverse it to make the 2 into 1, and close off the other end.

Your system is much higher quality then mine, and will probably last longer. I like the exhaust canister, but have a thing about keeping stock stuff.

Enjoy your set-up. If you do take it in the woods, you will find that the low end torque comes in handy negotiating difficult terrain.

I am totally with you in your reasoning. Just a correction for clarity sake, a heavy tube does not cost hp, you may as well fill your tyre with water and max hp will be the same. It just takes longer to get there. It is the same as if you take a pillion, your engine will not produce less hp, it will only accelerate slower.

Ahhh, I see how you read that. The whole setup, including the collector and the muffler is $900. If you want the stainless steel muffler instead of the carbon fiber one, then your price is $800 total.

I would be questioning my own sanity if the total was $1700 for the muffler and the collector, LOL!

All I'll say is I've got an SE with a Rotti intake and for the first time I'm jealous of the Adv guys!

Here is what NeptuneTriton has stated.

No power loss,16+ lbs weight reduction, less heat , high quality and $900 for the carbon "" OR "" $800 for the Stainless.

Please reread the posts , THEN argue your point.

Thanks for the tip and example. I suppose "spool up" time would be a good term for that then...a lighter wheel, tire, sprocket, and properly adjusted chain would spool up faster than what I have now. Removing overall weight from the bike results in a few "invisible" HP too, something the dyno wouldn't see. I'm also thinking that the knobbie may have been slipping on the drum or the particular map we loaded may not have utilized the full potential of my bike. It's really anybody's guess as there are a lot of variables even between identical 990's. In any case, I'm just happy with the weight savings and ability to add an aux fuel tank...the bike is already faster then I am, LOL!

Don't be, the SE's are badass bikes! I wanted one myself but couldn't find one, they're pretty scarce. That being said, I'm very happy with my Adventure too....great bike.

There hasn't been a proper mapping circulated for the adjusted flow of this new 2 into 1 mid pipe with Yosh single exhaust yet. But the guy at Rottweiler is a full on tuner "geek" and is probably tweaking maps for it as we speak. As you're already estimating, you'll have more potential to tap into with the simple downloading of new mapping.

It may be as simple as adding more fuel into your grids to accommodate the new flow.

Also, I'm not sure what the ethanol percentage is in Wash. but you can be damn sure the factory HP figures were based on the purest high octane ( non etho) fuel available.

That mid pipe is beautiful and appears to have minimal drag flow points in it's design and construction. Absolutely a huge improvement and no comparison to the restrictive flow from a stock midpipe chop and weld conversion. It's an artful product from an exhaust pro tuner.

And you shaved 20 lbs. off the top of your tail end in one fail swoop! That's worth gold.

Buy an Earth X 36 battery and you'll shave another 5 lbs. and you can pretty much call it good in the weight shaving department.

Now put all that into your pipe and go SMOKE IT!!!

Hehehe...