i have a 2007 s2r 800 with qd midpipe and complete cored cans.
my question is will the fuel injection compensate for more flow and less
restriction or is there something additional needed to rich-en the mixture?
The ecu won't compensate, so if it's lean you'll need a power commander or some other device to richen the map.
The overall map can be richened slightly using the trim function, but it isn't the best option.
i am very new to street bikes having been a motocross racer since 1969 and do not
have much experience with four stroke engines but i know when you change pipes
it changes fuel demands ( JETTING).
the term power comander has little meaning to me so if it is not too much trouble
can you direct me to the right component that will work for my application.
thanks in advance
cb
Quote from: motoendo on September 17, 2010, 03:53:59 PM
i am very new to street bikes having been a motocross racer since 1969 and do not
have much experience with four stroke engines but i know when you change pipes
it changes fuel demands ( JETTING).
the term power comander has little meaning to me so if it is not too much trouble
can you direct me to the right component that will work for my application.
thanks in advance
cb
The old carbed monsters would allow an exhaust change without re-jetting, although they were lean from the factory to meet EPA standards.
This link will help, and if you search the forum you'll find other options.
http://www.powercommander.com/eng_default.aspx (http://www.powercommander.com/eng_default.aspx)
Unless you also have a chopped airbox lid and K&N style filter you shouldn't need much if any fueling adjustment since your intake flow is stock. The basic rule with these bikes is if you free up the exhaust you can just barely get away with it. If you free up the intake and exhaust you need more fuel to go with the increased flow of air & exhaust. Best way to go would be to chop the airbox lid, buy a K&N style filter, and get the bike's ECU reprogrammed to Ducati Performance spec. Then make sure the TPS was reset, the fuel trimmed to 5% CO, and the throttle bodies synchronized. I would only purchase a Power Commander III after I had done all of that first, and only if I was obsessed. The PCIIIs cost close to $400 and in my opinion should be the last step for your bike. Afterward, prepare to spend even more $$$ to get the PCIII mapped properly on a dynamometer. The premade fuel maps supposedly won't do the trick, since every single bike is different.
I have the same bike with the same setup, except I have the Ducati Performance ECU and airbox. Properly tuned it seems pretty good. One can't really squeeze a hell of a lot more power out of the 800s, it's best to get them where they run smoothly and declare victory rather than waste a ton of money on fuel injection doo-dads.
how do you reprogram the ecu? would that be covered in the ducati manuel?
thanks for all the info
Well I probably should have pointed out that you aren't going to get away without spending some money. The ECU has to be sent off to a specialist who has a device that plugs into the ECU and wipes the rom clean then reprograms it, essentially making it a Ducati Performance ECU. There is no physical difference between a stock ECU and a Ducati Performance ECU, they just have different data parameters programmed into them. Reprogramming the ECU is around $400, alternatively you could purchase the DP ECU for $1200 alone or $1800 with the kit which includes the chopped airbox lid and carbon Termignoni mufflers. You can also get the potentially troublesome immobilizer deactivated when you reprogram the ECU.