'splain to me how to tune this exhaust

[hbliam]

OK, I waded through all the threads that have to do with exhaust upgrades but found differing info between the threads. Someone help me out.

I ordered a Sil Moto 2 into 1 full system. I'd prefer not to buy an ECU if I can accomplish the same thing with a PC3. And what's with this o2 workaround? Do I need that?

Thanks in advance.

[wayne63]

Originally Posted by hbliam

OK, I waded through all the threads that have to do with exhaust upgrades but found differing info between the threads. Someone help me out.

I ordered a Sil Moto 2 into 1 full system. I'd prefer not to buy an ECU if I can accomplish the same thing with a PC3. And what's with this o2 workaround? Do I need that?

Thanks in advance.

i have the same system on my hyper it has the carbon can=17lbs lighter than stock exhaust.
i was told by my dealer that the only way that he knew of to eleminate the 02 sensor was to get a race ecu at the time i did not have the money for it.
so here is what i did.
my sil moto did not come with a 02 sensor hole big enough for the stock sensor.
so i made stainless steel bung(love using that word) with the same treads as my 02 sensor i think sumit racing sells them.
then i cut a 1in hole in my mid pipe with a hole saw and i tig welded the bung to the pipe and retained the use of my 02 sensor
now you can use the stock ecu.
just to make shure the motor wasnt to rich or lean i took it to my dealer who has a dyno we put the 02 analizer in the pipe ran the bike.
it was a little lean but he said it wasnt too lean though.
he did have the ducati tune boy(or what ever it is called) pluged in to the stock ecu and every time he adjusted it too dump more fuel in to the injectors the 02 sensor reset the ecu back to stock setings.
he said its ok to run the bike as is but if i wanted to get the max hp out of the pipe i would have to get a race ecu which would eliminate the 02 sensor.
bike runs great no complants even gets better gas mileage.
im happy so far with the pipe other than the modifcations i had to make to some brackets.
that is how it went for me somebody else might have a better solution for you im no expert by any means......................wayne

[bullet3z]

I would be a little nervous running that lean. But that's just me. Others will chime in I'm sure.

[wayne63]

Originally Posted by bullet3z

I would be a little nervous running that lean. But that's just me. Others will chime in I'm sure.

ive put on over 5,000 miles since then so far no problems..............wayne

[hbliam]

111 views/1 reply/1 PM.....come on guys. help a brother out...

[dukepilot]

If you're set on not buying a DP ECU, you have a few options. You can try the the fatduc emulator that allows you to make adjustments to the closed loop operation of the ECU by manipulating the signal from the 02 sensor. If you mod the intake along with the exhaust your fueling may still be lean however.

With the stock ECU the Power commander will only act on the open loop operation above around 20% throttle/4400 rpm. This does not seem to me to be an ideal setup.

Probably the best option is to contact Anthony at Desmoworks or Motowheels in Sacramento. I think they can reflash your stock ECU to DP ECU (open loop) specs.

[Monstaman]

Originally Posted by hbliam

OK, I waded through all the threads that have to do with exhaust upgrades but found differing info between the threads. Someone help me out.

I ordered a Sil Moto 2 into 1 full system. I'd prefer not to buy an ECU if I can accomplish the same thing with a PC3. And what's with this o2 workaround? Do I need that?

Thanks in advance.

If you want a PC111 you pretty well have to get a DP ECU to get the benefit as you cannot adjust the std ECU, an o2 emulator will help but essentially the PC111 will only work the top AFTER the o2 sensor has done its job making sure your bike runs lean.

The DP is worth it IMO, you won't need a PC111 unless you wonna re-map or tune to 100% perfection map wise, my bike with DP ECU set at plus 14 runs as strong as an ox.

[AXE]

When I did my full Zard system, DNA filter, and DP lid mod, the bike ran well with just the DP ECU from the Termi system. I found one for around $300 and with just a TPS reset it ran pretty strong.

I then added a PCIII to fine tune things a bit and squeeze some more power out. That set me back another $500 for the unit and dyno work. It definitely adds some power and runs a little better, but it is at the expense of fuel mileage. I am getting under 30 mpg now and was around 33 prior to the PCIII and close to 40 stock.

Like Duke said, recently Anthony said he is going to be able to reflash the stock ECUs for around $400 and that might be the best of both worlds. Otherwise, I think the DP ECU is your best route.

Out!

[dave2riff]

Originally Posted by dukepilot

If you're set on not buying a DP ECU, you have a few options. You can try the the fatduc emulator that allows you to make adjustments to the closed loop operation of the ECU by manipulating the signal from the 02 sensor. If you mod the intake along with the exhaust your fueling may still be lean however.

With the stock ECU the Power commander will only act on the open loop operation above around 20% throttle/4400 rpm. This does not seem to me to be an ideal setup.

I'm using a FatDuc with a PC III and the closed- to open-loop transition is really
seamless. Fuel metering on this setup is about perfect for rideability, with no
hesitations, flat spots, or lean surges anywhere. The tendency for RPM to
drop (or stall) near idle when hot is gone now, too. Operating temps are
down as well, and while I expected a hit in fuel consumption, my fuel range
compared to stock has been about the same. There are times when closed-
loop operation is actually _better_ for part throttle conditions, especially if
AFR targets are reasonable, not necessarily Euro-3 compliant.

While it sure would be great if these bikes were optimized for performance
and rideability from the factory, emissions compliance being what it is, we
can only resort to after-purchase re-programming and devices like O2 sensor
manipulators. This is only going to get worse in the future, with movement
toward more and more tamper proof fuel systems. Even though it costs us
riders, both in time and money, at least we still have options to "get it right"
for now... options that might well disappear if governments have their way
with it. Sorry, just getting on my libertarian soapbox... think I need my
power wheelie fix.

[GMP]

Just get the DP ECU or a reflash and I'm sure you will be satisfied. Then when you have time you can run the bike on a dyno, get the true AFR curve, and decide if/how you want to proceed. The nice thing about just using the DP ECU is its simple, no extra components to fail.