[tonyjuliano]

Finally!

After months of waiting, it's time to ditch the stock exhaust and do some tuning.

I had originally opted for, and ordered, a Spark EVO V slip-on, but after waiting for almost 10 weeks, with no delivery on the horizon, I made a decision to go with a Remus Hypercone Titanium.

Also picked up a Rexxer unit for tuning and reprogramming the stock ECU. Spent most of the day at the dyno, getting things somewhat dialed in, and I'm happy to report that it is relatively easy to get some decent power gains out of this motor.

I haven't touched the intake side yet, and the Remus still has the DB Killer installed, but I was able to get an additional 3HP and 2.5FT/LBS of torque, over stock. Not bad at all, should be easy to coax another couple of HP out of her, given more time and effort.

The stock exhaust and catalytic converter are VERY heavy, mine weighed in at almost 14 LBS (with all the fittings and hardware). The Remus Hex Titanium weighs in at just a hair over 3 LBS, so the overall weight reduction was also pretty significant.

The Remus sounds great, nice full tone without being obnoxious - very pleased. Here are some lousy pics, please excuse the cell phone shots - it's been a very long (but rewarding) day...

More to come, as things progress...

 

[greer]

That is a nice looking exhaust, really suits the bike. Congrats on the work and thanks for posting along.

Sarah

 

[Scramblizer]

Thanks for sharing, Tony! Did you add the catalyst or installed and tuned the Remus without? Is the Rexxer software easy to handle once one understood the basics of fuel injection systems?

 

[tonyjuliano]

Thanks for sharing, Tony! Did you add the catalyst or installed and tuned the Remus without? Is the Rexxer software easy to handle once one understood the basics of fuel injection systems?

The Remus I installed is the one without a cat . I did leave the DB Killer in, and tuned for that, but will be making another map today for the version without.

With a Rexxer "User" module, you can't create mapping - only reprogram the ECU with alternate maps. There are premade maps available for almost any combination of intake/exhaust mods.

I went crazy and purchased a "Dealer" Rexxer module along with their map creation software. This enables me to create my own custom maps (I have access to a dyno), for just about any bike.


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[Chet Jr]

It seems the Remus exhaust is down on HP compared to stock?
Didn't the original Rexxer results with a stock bike show a 4HP gain over a large rpm range?

The lighter weight and better sound of the Remus are definitely a plus though.

 

[tonyjuliano]

It seems the Remus exhaust is down on HP compared to stock?
Didn't the original Rexxer results with a stock bike show a 4HP gain over a large rpm range?

The lighter weight and better sound of the Remus are definitely a plus though.

The numbers quoted were above the gains above the Rexxer map using the stock exhaust.

I should have clarified that.


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[Chet Jr]

Hi Tony,
Thanks for the quick response!
Wow - your results then are really impressive. Could you please share a pic of the graph so we can see the overall change?

Great work.

 

[tonyjuliano]

Hi Tony,
Thanks for the quick response!
Wow - your results then are really impressive. Could you please share a pic of the graph so we can see the overall change?

Great work.

Soon enough, still tuning today. Have to address the intake now. Going with a more free flowing filter.

Should be all done with everything by the end of the week.


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[mugwump]

That's good to hear I like the sound of the Remus ( not worried about HP gain) and at half the price of a Termi !!!! It's a no brainer when the time comes to replace

 

[tonyjuliano]

FYI...

Updates still coming, I didn't like the results with the first couple of filters I tried, so I'm in the middle of trying some small airbox mods.

More details soon...

 

[Hardright]

Tony, I too have the same Remus exhaust. Was it easy to remove the DB killer? Am having a hard time removing mine.

 

[tonyjuliano]

Tony, I too have the same Remus exhaust. Was it easy to remove the DB killer? Am having a hard time removing mine.

Removing the DB Killer is relatively easy. It's held in by both a hex-head screw located in plain sight at the rear of the can (that is accessible while installed), but also by a couple of small tack welds internally. You need to break these tack welds to remove it, and this has to be done while the can is not in place on the bike.

First, remove the hex-head screw form the back, then you take a length of broomstick (or similar) and insert it into the inlet end, then gently tap and the weld will break easily. After this you can remove / replace - while installed - by just removing the screw.

 

[Shmakt]

Hi Tony, with the rexxer and applying the tune, is it 'tied' to the bike ECU?
Asking if I buy this exhaust, and I do like it, and let's say you had a tune map to match my setup, and you were so kind to supply the map, could I just apply to the ECU somehow, or does the rexxer unit have to connect to the ECU with specific serial number to apply map?
Living in AUS and dollar exchange rates makes buying the rexxer an expensive exercise, plus sending the ECU half way round the world isnt something I really want to do to have them program it.

 

[tonyjuliano]

Hi Tony, with the rexxer and applying the tune, is it 'tied' to the bike ECU?
Asking if I buy this exhaust, and I do like it, and let's say you had a tune map to match my setup, and you were so kind to supply the map, could I just apply to the ECU somehow, or does the rexxer unit have to connect to the ECU with specific serial number to apply map?
Living in AUS and dollar exchange rates makes buying the rexxer an expensive exercise, plus sending the ECU half way round the world isnt something I really want to do to have them program it.

The Rexxer "User" units are tied to a single ECU. There are "Dealer" units that will work with any ECU. There are Rexxer dealers in AUS - here is a list...

RexXer Agents

 

[tonyjuliano]

Okay, there is good news, and also bad news...

The good news is that with the Remus exhaust (sans DB Killer) and a BMC filter (race version), plus cutting a hole in the front of the airbox, followed by fueling adjustments - one can expect a whopping increase of almost 8 hp, plus 3.6 ft/lbs torque over stock.

The bad news is that at this point the stock clutch will not keep up, it slips badly at speed.

So, my little experiment now ends. I'm reverting back to a much "milder" setup. The exhaust is way too loud, so the DB killer goes back in, plus I'm going with the "normal" BMC filter (still flows better than OEM), and this renders the hole in the air-box as unnecessary.

Much more "practical" setup, and it still gains about 6hp plus 3 ft/lbs torque over stock. The added bonus is that these power gains are all linear - occurring just about everywhere along the power curve.

Plus the bike runs SO much better (and cooler) now. I'm happy...

 

[Shmakt]

The Rexxer "User" units are tied to a single ECU. There are "Dealer" units that will work with any ECU. There are Rexxer dealers in AUS - here is a list...

RexXer Agents

Thanks for the link to local guys.

 

[stavely]

Okay, there is good news, and also bad news...

The good news is that with the Remus exhaust (sans DB Killer) and a BMC filter (race version), plus cutting a hole in the front of the airbox, followed by fueling adjustments - one can expect a whopping increase of almost 8 hp, plus 3.6 ft/lbs torque over stock.

The bad news is that at this point the stock clutch will not keep up, it slips badly at speed.

So, my little experiment now ends. I'm reverting back to a much "milder" setup. The exhaust is way too loud, so the DB killer goes back in, plus I'm going with the "normal" BMC filter (still flows better than OEM), and this renders the hole in the air-box as unnecessary.

Much more "practical" setup, and it still gains about 6hp plus 2.2 ft/lbs torque over stock. The added bonus is that these power gains are all linear - occurring just about everywhere along the power curve.

Plus the bike runs SO much better (and cooler) now. I'm happy...

Tony, good work. Any chance of getting some dyno graph runs up on this site?

 

[tonyjuliano]

Tony, good work. Any chance of getting some dyno graph runs up on this site?

Here you go, this is where I "settled" at (pulling out "all the stops" netted over 80 rear wheel HP)...

Please note - all dyno's have differences - for reference the stock bike measured out at 72.6 HP and 50.2 FT/Lbs torque.

 

[stavely]

Thanks Tony. Top man. Can you post the stock graph for comparison of shape?

 

[tonyjuliano]

Thanks Tony. Top man. Can you post the stock graph for comparison of shape?

I will, when I locate it (I've got a zillion graphs all over the place right now, it's been a pretty hectic couple of weeks). Suffice to say, the gains are pretty linear - everywhere - not a dip below stock anywhere.