Closed Loop System...

[Sike]

Given that our bikes have a closed loop injection system, has any heard whether or not Aprilia will sell/give us the map built for the Akropovic? Or, does the system have enough "band width" to adapt to the Akropovic like it appears to have for the Leo Vince?

Thanks, Steve

And, any wild chance Akropovic or somebody else will built a plate for under the seat and above the exhaust? I know it can be home built, but I would like my $1000 exhaust meeting up with a professionally formed plate (which my home build wouldn't be)

[makrand]

I also would love to know the answer to these questions.

I've just finished measuring my metal plate up from Dan's pictures and measurements.
Picture when my new camera turns up. (If I remember)

It's not so hard and will probably be better than a professional one if you take care.
But then I do have plenty of time being "retired".

[cheekythomas]

I would assume it will be similar to the current RSV set up...

As std they run a closed loop system, but with the Official Akra system youll get a special map which will bypass the closed loop system and adjust the fuelling for maximum power and disregard emission output.

[pete roper]

Completely different system due to the RBW. As previously mentioned the whole system makes real-time adjustments to compensate for any changes, the only limiting factor being the final delivery volume of the injectors.

Pete

[makrand]

Does that mean we can put any pipe on and the bike will adjust?
So no need for dedicated fuel maps?

[backroads4me]

Does the Shiver have an MAF? If it does, I would expect it to be able to tolerate some upgrades without needing a new map. It would notice the extra air coming in and inject more fuel as needed to compensate for the freer flowing exhaust.

If it's a simpler "speed density" system, then you need a new map to compensate for the change.

backroads4me

[Sike]

Does that mean we can put any pipe on and the bike will adjust?
So no need for dedicated fuel maps?

I haven't seen enough information regarding the design of the system to be sure. But, it appears that the system does compensate to relatively small changes (like a slip-on exhaust). The reason I believe this is that bikes don't actually tend to make more power with just a slip-on, unless there is a PC-III (or equivalent) with a map to adjust for the change. And, our bike made a pretty good power increase with the Leo Vince (which is the evidence I'm using).

Steve

[cheekythomas]

Completely different system due to the RBW. As previously mentioned the whole system makes real-time adjustments to compensate for any changes, the only limiting factor being the final delivery volume of the injectors.

Pete

Indeed, the shivers system is a little more advanced than the current RSV but the RSV is also self adjusting as standard via the lambda sensor allowing it to alter its fueling depending on what it detects coming out of the exhaust, however when you switch to Map2 you bypass the lambda probe and turn it off so the mixture can be richened up past the normal limits and allow maximum power...

I guess we will get a similar set up for the shiver with a "Race Use Only" tag as the new software will allow more fuel and therefore make the machine no longer meet its manufacturing regulations.

If you just want to fit a set of cans for noise related purposes, then within the reason the standard ECU program should be capable of enough adjustment to allow it to alter the fueling to suit, but as with the RSV and others where they supply cans and a program, its more aimed at getting the most power as well, and without a ECU program to bypass the emission system and allow a richened up mixture you will never get the maximum from it.

[Sike]

Indeed, the shivers system is a little more advanced than the current RSV but the RSV is also self adjusting as standard via the lambda sensor allowing it to alter its fueling depending on what it detects coming out of the exhaust, however when you switch to Map2 you bypass the lambda probe and turn it off so the mixture can be richened up past the normal limits and allow maximum power...

I guess we will get a similar set up for the shiver with a "Race Use Only" tag as the new software will allow more fuel and therefore make the machine no longer meet its manufacturing regulations.

If you just want to fit a set of cans for noise related purposes, then within the reason the standard ECU program should be capable of enough adjustment to allow it to alter the fueling to suit, but as with the RSV and others where they supply cans and a program, its more aimed at getting the most power as well, and without a ECU program to bypass the emission system and allow a richened up mixture you will never get the maximum from it.

Given that the folks outside Italy are still just learning about this bike, and that the RBW has to be integrated into the closed loop, I'm guessing that this system is notably more advanced than previous systems. And, the response to the slip-on exhaust was really good, so it must have significantly more ability to adjust than previous systems. However, it might be a year or two before enough work/research is done to know for sure.