(11-03-2013, 12:42 AM)HikerToo_imp Wrote: [ -> ] (11-03-2013, 12:26 AM)Deanohh_imp Wrote: [ -> ]After installing the PCV, it will not be able to change timing according to the octane of gas you put in.
I was looking for this type of info on their web page, did you read this somewhere or know this from some other source?
I was looking for this type of info on their web page, did you read this somewhere or know this from some other source?
I know most guys opt for a flash when its available keeping the integrity of the ECU. Most also have multiple maps for different tracks as the have different elevations.
I am running a Staintune and a K&N air filter. I was going to have a custom map done, but I really don't think it will be that much different that the preloaded one from Dynojet.
The Staintune isn't a drastic departure from the stock muffler, and the K&N, well, I about s**t when I took the stock air filter out, I have never seen such a restictive unit. I was suprised the bike could get any air at all.
And I don't think this PCV for the CB has the timing function built in like others do, it only has the fuel .
(11-02-2013, 10:54 PM)CIP57_imp Wrote: [ -> ]I'm wondering by locking in these value's does the ECU still have its functions to monitor for elevation changes, retard and advance timing for low or high octane gas. I know when they set up PC's at the track all these factors come into consideration.
installing the PCV does not change any functions of the ecu. All the sensors, except the O2, remain hooked up and continue to act on the ecu, except the O2 is replaced by resistors so that the ecu sees its input as a constant signal. I don't know what that constant signal is. The PCV doesn't prevent the ecu from doing anything it could do before. It adds or subtracts fuel from the injector signal after whatever map and trims the ecu is putting out. It does not lock in or change the ecu or anything that happens within the ecu. As well, anything the ecu cannot do before, it still cannot do after installing the PCV..... such as retard and advance timing for low and high octane gas.
doctor:"the operation was a success"
patient:"will I be able to play the piano?"
doc:"yes, of course"
patient:"that's amazing, I never could before"
(11-04-2013, 02:17 AM)Deanohh_imp Wrote: [ -> ] (11-02-2013, 10:54 PM)CIP57_imp Wrote: [ -> ]I'm wondering by locking in these value's does the ECU still have its functions to monitor for elevation changes, retard and advance timing for low or high octane gas. I know when they set up PC's at the track all these factors come into consideration.
installing the PCV does not change any functions of the ecu. All the sensors, except the O2, remain hooked up and continue to act on the ecu, except the O2 is replaced by resistors so that the ecu sees its input as a constant signal. I don't know what that constant signal is. The PCV doesn't prevent the ecu from doing anything it could do before. It adds or subtracts fuel from the injector signal after whatever map and trims the ecu is putting out. It does not lock in or change the ecu or anything that happens within the ecu. As well, anything the ecu cannot do before, it still cannot do after installing the PCV..... such as retard and advance timing for low and high octane gas.
doctor:"the operation was a success"
patient:"will I be able to play the piano?"
doc:"yes, of course"
patient:"that's amazing, I never could before"
installing the PCV does not change any functions of the ecu. All the sensors, except the O2, remain hooked up and continue to act on the ecu, except the O2 is replaced by resistors so that the ecu sees its input as a constant signal. I don't know what that constant signal is. The PCV doesn't prevent the ecu from doing anything it could do before. It adds or subtracts fuel from the injector signal after whatever map and trims the ecu is putting out. It does not lock in or change the ecu or anything that happens within the ecu. As well, anything the ecu cannot do before, it still cannot do after installing the PCV..... such as retard and advance timing for low and high octane gas.
Right, the computer won't do anything it didn't do before, but it uses the O2 sensor to set the fuel ratio based on the efficiency of the current burn. So, if you change altitudes regularly, the ECU can no longer compensate for thinner air, crappy gas, etc. The PCV basically puts the ECU into (virtual) open-loop mode all the time.
(11-07-2013, 04:29 AM)AzBob_imp Wrote: [ -> ] (11-04-2013, 02:17 AM)Deanohh_imp Wrote: [ -> ] (11-02-2013, 10:54 PM)CIP57_imp Wrote: [ -> ]I'm wondering by locking in these value's does the ECU still have its functions to monitor for elevation changes, retard and advance timing for low or high octane gas. I know when they set up PC's at the track all these factors come into consideration.
installing the PCV does not change any functions of the ecu. All the sensors, except the O2, remain hooked up and continue to act on the ecu, except the O2 is replaced by resistors so that the ecu sees its input as a constant signal. I don't know what that constant signal is. The PCV doesn't prevent the ecu from doing anything it could do before. It adds or subtracts fuel from the injector signal after whatever map and trims the ecu is putting out. It does not lock in or change the ecu or anything that happens within the ecu. As well, anything the ecu cannot do before, it still cannot do after installing the PCV..... such as retard and advance timing for low and high octane gas.
doctor:"the operation was a success"
patient:"will I be able to play the piano?"
doc:"yes, of course"
patient:"that's amazing, I never could before"
installing the PCV does not change any functions of the ecu. All the sensors, except the O2, remain hooked up and continue to act on the ecu, except the O2 is replaced by resistors so that the ecu sees its input as a constant signal. I don't know what that constant signal is. The PCV doesn't prevent the ecu from doing anything it could do before. It adds or subtracts fuel from the injector signal after whatever map and trims the ecu is putting out. It does not lock in or change the ecu or anything that happens within the ecu. As well, anything the ecu cannot do before, it still cannot do after installing the PCV..... such as retard and advance timing for low and high octane gas.
Right, the computer won't do anything it didn't do before, but it uses the O2 sensor to set the fuel ratio based on the efficiency of the current burn. So, if you change altitudes regularly, the ECU can no longer compensate for thinner air, crappy gas, etc. The PCV basically puts the ECU into (virtual) open-loop mode all the time.
installing the PCV does not change any functions of the ecu. All the sensors, except the O2, remain hooked up and continue to act on the ecu, except the O2 is replaced by resistors so that the ecu sees its input as a constant signal. I don't know what that constant signal is. The PCV doesn't prevent the ecu from doing anything it could do before. It adds or subtracts fuel from the injector signal after whatever map and trims the ecu is putting out. It does not lock in or change the ecu or anything that happens within the ecu. As well, anything the ecu cannot do before, it still cannot do after installing the PCV..... such as retard and advance timing for low and high octane gas.
Right, the computer won't do anything it didn't do before, but it uses the O2 sensor to set the fuel ratio based on the efficiency of the current burn. So, if you change altitudes regularly, the ECU can no longer compensate for thinner air, crappy gas, etc. The PCV basically puts the ECU into (virtual) open-loop mode all the time. That's exactly what I thought. Thanks for posting