Exhaust 1100 EVO question / popping

[Radracer6]

I've read many posts on how an aftermarket exhaust will still burrple/pop on the EVO even with a reflash.

I had a Sport1000 with a termi exhaust that would burble and pop and I thought it was normal, had it tuned at a shop and turned out it was running lean and they were able to adjust it and no more popping after that.

I've installed a comp werkes slip on my EVO along with a MW reflash with removal of O2 and exhaust valve and it's been burbling and popping constantly on decceleration. I will be having my shop check it out although they've told me the EVO ecu is different and not tunable.

Does everyone experience popping with the CW exhaust? is it inherent since technically the EVO has a double muffler setup and the CW is just one pipe? I noticed the 09 monster 1100 CW is still two pipes.

[Barney]

i have the same slip on youre running, but instead of the reflash i opted to install bazzaz fuel mgnt - ive had this setup for ~ 3k miles, and I never notice poping, and only a very occasional blurble on decel, and I'm pretty happy overall with the way the bike is running vs. stock.

[Radracer6]

So they cant really tune/change the reflash? Am i S.O.L?

[Barney]

the ducati performance ecu is an option - i dont think the motowheels reflash is the same as that, but I believe it's possible to have that map flashed to your ecu. you can do a full tune with a powercommander, but if i'm not mistaken you need a dyno for that.  I like the bazzaz because there's a fuel module that will tune on the fly - I dont have that on my ride yet but it's planned.

[Radracer6]

Hmm motowheels did say the map they reflashed it with is custom for the exhaust. It does however say DP in the readout when i turn on the ignition though.

[oldndumb]

the ducati performance ecu is an option - i dont think the motowheels reflash is the same as that, but I believe it's possible to have that map flashed to your ecu. you can do a full tune with a powercommander, but if i'm not mistaken you need a dyno for that.  I like the bazzaz because there's a fuel module that will tune on the fly - I dont have that on my ride yet but it's planned.

I beleive that the MotoWheels reflash is the same map as the Ducati DP.

You do not need a dyno to do a PoweCommander tune. You would need a dyno to do a tune compliant with the desired outcome, otherwise it is a guessing game.

A full tune would include ignition tables. The PowerCommander for the M1100evo does not include ignition map options.

PowerCommander has an AutoTune option which provides the ability to set a desired AFR and then collects data as you ride and presents options necessary to retune each cell to attain the previously set desired AFR. Unlike the Bazazz, it has a wideband for each cylinder and adjusts each cylinder. The Bazazz does only one. I do not know, but doubt that it "tunes on the fly". I suspect, as with the PC, it collects the data on the fly but must be loaded via a lap top.

I may have misstated some Bazazz info because I do not have first hand knowledge of it. I have spoken with their tech support, as well as the PC ones. The thing to remember about either autotune method is that the desired AFR is an estimate whereas a dyno run is hard data.

I have the PCV with AutoTune on my M1100evo. The can is CompWerks and the filter is my MWR clone. With about seven retunes based on AutoTune data, the bike runs so smoothly that it still surprises me. The last two retunes seemed to increase performance noticeably. But, even at that, I would probably have achieved the same or better on a dyno staffed by a Ducati enthusiast. The PCV and AutoTune were an acceptable compromise. Note, it is not a given that any particular map or AFR will provide the same results on identical bikes.

Please correct me if I have gone astray, ungeheuer.

[danaid]

^ agreed.

Had my 1100 dyno tuned recently and the difference while riding is significant, but not much seen on paper. Popping is now minimal, as well as other sounds that arrived after installing a full Termignoni exhaust.

[Radracer6]

Ok so sounds like ECU was step 1. PCV or Bazzaz is step 2 to get rid of deccel popping and low rpm surging. Does the PCV use stock O2 sensors? I had them disabled with the reflash.

[danaid]

PCV uses a separate o2 optimizer device to modify the fueling below 5000 rpm. Is your re flash done with your origional ECU or an extra? Ask whoever did your re flash to redo or refund since it's not what you wanted?

[Radracer6]

Yes its my orignal ecu with a reflash done by motowheels for the comp werkes slip on. It removed exhaust valve and o2 sensors and it says DP ecu on readout now.

If i were to get the PCV though sounds like I wouldnt need the Optimizer as the o2 sensor are disabled on my current setup

[Barney]

youre right, the bazzaz collects data and then needs to be updated via a laptop or something along those lines as far as I know.

 

[danaid]

Definitely you would need to have the bike dyno tuned as the auto tune uses the o2 to help tune

[oldndumb]

Definitely you would need to have the bike dyno tuned as the auto tune uses the o2 to help tune

Kinda. The AutoTune swaps out the stock O2 sensors for wide bands. Conveniently, the EVO motor bungs are the correct size. Then it records recommendations in percentage values to bring the AFR up or down to meet the desired AFR. This is done without need for a dyno. The advantage of using a dyno is that a knowledgeable tech can evaluate the data and make changes accordingly. The AutoTune is sort of guessing because you set a theoretical AFR and then use your butt. It is not a wild guess, and nowhere as accurate as a dyno but you can definitely enhance the bike ridability and motor smoothness.

Scroll down to Using the autotune software.

http://www.powercommander.com/powercommander/Support/powercommander_video_install_guides.aspx#ytplayer

[Radracer6]

Oldndumb

So just to clarify since my o2 sensors are disabled if i get a pcv or bazazz can i skip connecting their o2 optimizers and just run their map and or get it tuned?

[oldndumb]

My system has the O2 sensors replaced by the widebands for the AutoTune, so I can not reply with authority. I do remember Raux and ungerhuer commenting along those lines. http://www.ducatimonsterforum.org/index.php?topic=63828.0

I do remember being disappointed after the reflash with the DP tune, (O2 disabled) and specifically the lumpy running at <5K, which was what prompted me to try the PCV and AutoTune. The PCV came with the Optimizers but because I installed the AutoTune at the same time, I never experienced running the PCV alone. Which reminds me, I still have the unused Optimizers if anyone cares to play with them.