Perhaps the least understood of all the sensors on the motorcycle..
nw_guy4_fun said:Respectfully submitted counterpoint
The SERT and proper CLB numbers, perhaps eliminating some of the higher load areas from closed loop control can accomplish a equal or better result than the PC solution without any additional added electronic gear. A proper dyno tune would be the finishing touch to a very good running bike that also got very good fuel mileage.
No pony in this race, just a hobbiest. My own bike has a DTT that also gets the job done as would the Tmax.
Closed loop is here to stay. If Power Comander had a system that updated their box as does the "linktune" but on a roadtest I may get a little interest but that would be without screwing with closed loop by adding the anti-technology eliminators .
Now that sounds like Nightrider's fix with their voltage divider. Eliminating the 02 sensors simply put, get's you back to having the ecm behave just like the 06 and earlier delphi, back before all the heat and pinging issues.nw_guy4_fun said:And if one were to put in 1/2 meg resistors inline with the stock o2 sensors and use closed loop with the CLB bias maxed out...
i doubt you could be corrected. spot on as always. but im sure someone will try.nw_guy4_fun said:Maybe grock or Doc can chime
IMO 02 eliminators are not the way to tune with the SERT. If one was inclined you can toggle off the whole closed loop area by a software change. No hardware changed. The target AFRs are not the issue, VEs need changing to affect a change from my knowledge, I could be corrected.
this is my understanding, also. if you plug in richer values, just enough to keep it out of closed loop, you should be fine. It is my understanding that you really don't want to be in the loop, that even at it's best, it is to lean. I'll go out on a limb here and say that if set to have the leanest setting just out of range, you can tune the for all other areas. I would think that you shouldn't have a too rich problem ever.HAWGZILLA said:Although some have had success useing the eliminators, I still believe they are not required for a properly tuned SERT. There is certainly more than one way to skin a cat!!
I tend to take the entire map out of closed loop and don't try to cheat the system with the CLB tables. I HAVE encountered problems when useing the CLB tables to richen the closed loop areas. There appears to be some validity to the learned corrections being applied to the entire map. I feel that taking the entire map out of closed loop, there are no learned corrections. If I'm wrong please educate me further. Since I have been useing the open loop tuning method, I have experienced no comebacks or apparent self corrections to any map I've done. This method I've described has worked well for me and I probably average 5-8 SERT tuneups a week. I'm always open for further education so if I'm off base, please educate me! For those that use the eliminators and are happy, well that's what it's all about in the long run. I guess the botttom line is-there are several methods to a successful tuneup--use what works for you. JMHO
Looks like Doc was typing faster than me--just proves there are many ways to get a good tuneup.