"Super Slip-On" Progress Report

Gorilla RE and myself have been developing an exhaust system for the 1199. Nearing the final product we thought we would share what we have achieved thus far. Our system utilizes part of the OEM exhaust system for simplicity and ease of install but this doesn't sacrifice power. Mid range gains of around 20hp and 20Tq, with 6hp peak. The power is now much more usable than ever. 1198 grunt with 1199 peak power! Would love to hear what everyone thinks, good and bad.

Patent pending

Our main goals were:
More power everywhere with a focus on the 5-8k dip.
Retain the factory heat shielding, cooling fan, O2 sensors and passenger pegs
Modular design which could be customized easily
Easily install or remove a baffle for reduced sound
Keep the compact sleek look of the motorcycle with a racing style

-The attached pictures are of the left and right sides. We will have full bike pictures shortly.
-Please note this is an early Dyno run and is the same bike, same dyno. The bike was tuned with Bazzaz piggyback, so only fuel was touched. The correction factor is SAE which usually reads lower but the important thing to consider is the delta between the runs. The last dyno is comparing my bike with an 1198, with full exhaust.

Very cool Nic!

Good initiative and keep up the progress reports as this may take off!

I like it....

Just post bigger Dyno pics please...

Please forgive the poor quality pictures. I will put them on a host site and put up a few more this evening.

-J

Sorry! Here they are again

Stw said:

I like it....

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Thank you!

-J

Claymore said:

Just post bigger Dyno pics please...

Click to expand...

Will work on this later today!

Links larger Dyno charts.

http://i156.photobucket.com/albums/t20/nudstad/50a4b606-ee8f-4733-9011-54dc8431fc74_zps33a29cc8.jpg

http://i156.photobucket.com/albums/t20/nudstad/c7664984-b150-40b1-9d48-fb98e3234fe9_zps5820d0e8.jpg

i have some design advice: can you put powder coated cowl like cover to integrate the bottom into a cleaner streamlined look ¿ ¿ ¿ (it may also run bit cooler and protect pipes from debris etc)


AND SOUND CLIPS PLS



edit: r u achieving backpressure thru bends exclusively or are there internal chambers etc?

all without remap?


congrats!!! i like the looks!!!

VAST said:

i have some design advice: can you put powder coated cowl like cover to integrate the bottom into a cleaner streamlined look ¿ ¿ ¿ (it may also run bit cooler and protect pipes from debris etc)


AND SOUND CLIPS PLS



edit: r u achieving backpressure thru bends exclusively or are there internal chambers etc?

Click to expand...

Are you mainly referencing the area that the oem muffler(s) were mounted? The rear tail pipe section is roughly the same angle as the top side of the oem muffler. This was done so that the pipe followed the body work for a "cleaner", more eye pleasing line. I like the idea of a cooling baffle that also acted as a lower "valance" of sorts, but the hight was a concern with regards to track use. If it were much lower, it may have a clearance issue over the rumble strip(s).

"Back pressure" ie pressure wave tuning, is accomplished by bends, length, merges and diameter, mostly... No internal baffling other than the "muffler" in the tail section.

-J

Gorilla RE said:

Are you mainly referencing the area that the oem muffler(s) were mounted? The rear tail pipe section is roughly the same angle as the top side of the oem muffler. This was done so that the pipe followed the body work for a "cleaner", more eye pleasing line. I like the idea of a cooling baffle that also acted as a lower "valance" of sorts, but the hight was a concern with regards to track use. If it were much lower, it may have a clearance issue over the rumble strip(s).

"Back pressure" ie pressure wave tuning, is accomplished by bends, length, merges and diameter, mostly... No internal baffling other than the "muffler" in the tail section.

-J

Click to expand...

maybe i'd like to see the termi OG stainless/ti raw pipe look...but i still think a "cooling" plate (carbon fiber "shroud" that connected the body work around and allowed for that single pipe to extend) that cleaned up the line off the fairing a la termi may be nice...or maybe it'd be just cosmetics...not sure....but overall i am feeling this approach....(lot more than AR LOL)....

Back pressure is a tricky topic which I am no expert but here's my 2 minutes worth. You want to design a exhaust system which is large enough to flow the required volume. Most will say bigger is better but that's hardly the case. Your engine only expels so much gas. If you increase piping diameter your velocity will drop. You want the velocity high without causing a restriction. In an ideal world we would have and exhaust which can shrink and grow as the engine requirements change. But I haven't found any metal or an controller which can do that. : /

It's a game of give and take. Our exhaust was focused on the midrange. If we adjust it we could probably gain a few on top at the expense of mid power.

Phl said:

all without remap?


congrats!!! i like the looks!!!

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As stated earlier, some miner fuel tuning was done to compensated for the increase in airflow. But no timing or major adjustments. I expect even larger gains when/if we decide to fully tune it.

-J

and it will go with stock headers? i have a set with WB prongs and coincidentally, it's ceramic coated flat black

weight/price/dB level estimates values out yet?

Phl said:

and it will go with stock headers? i have a set with WB prongs and coincidentally, it's ceramic coated flat black

weight/price/dB level estimates values out yet?

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Yes. There is a very good reason we retained the factory "headers", and it was not due to saving money

The weight/DB/value is not out to the public yet. I will say, that since a traditional muffler(s) isn't being used, the weight is "pro" for this system!

-J

In for sound clips!

Very cool...I'd buy one!

20hp gain for a slip on.

You are achieving more than any other full system.

Do you have an comparisons against Termi/Akra using the same dyne and running it under the same conditions etc.