I just recently became aware that the '07 Delphi ECU does indeed have adaptive AFR plotting capabilities. As I understand it to this point it's up to 30% change. I will know more about it.

 

Yes it can...Like I said, from 14.1 to 15.1.Very Limited. Not much of a plotting capability. [8D]
Thanks to narrow band 02`s you will have less than 30%. If you added wide band 02`s you might see 30%, but you would have no way to verify it.

 

Cars have a mas air sensor that tells the computer how much air is entering the engine. Harley's the air flo is caculated. There isnt enough room to put one on. I think on cars the called it a speed denisty system. then the added the mass air flow.and that is called maf system.

 

so the general consenus is that I can put just mufflers on as long as i stay below 2". will that give my wife "that harley sound" she wants to hear?

 

I put the Fullsac 2 into 2 kit with Python slip-on mufflers on my new, completely stock, 07 Street Glide. I've now got almost 8K miles on it and it runs fine. It's still lean, still gets hot, but it runs fine and sounds great. Just got back yesterday from the 4 Corners Rally in Durango, CO. Over 2K miles, no problems. I cruise at 3K rpm, that's about 85 mph for hundreds of miles at a time. No problems, just listen to the radio. Go for it!

 

The range of 14.1 to 15.1 is 14.6 ± 3.5%.

I'm not talking about the ability to produce an offset of 30% AFR, it's the ability to produce an offset of 30% volumetric efficiency factor used in calculating how much fuel to add to the mix. What I haven't been able to determine just yet is whether it's 30% total window or ± 30%.

If anyone adds mufflers without doing anything else and rides like that, then decides later to add a fueler, they should before spending time trying to dial it in either put the stock mufflers back on and ride a bit or visit the dealer and have the AFV reset with the Digital Technician. Furthermore, if the fueling add-on doesn't use the stock O2 sensors, don't hook them up; it'll really mess with the fuel mapping when the AFV gets modified again.

This pertains to the '07 model year; probably also '08.

 

Sorry, but an AFR restis notavailable. Yes youcan reset the BLM`s tables, but the AFR is a fixed parameter within the PROM`s calibration ID. The 02`scan adjust the AFR within the set parameters, but you can not adjust the AFR calibrationwithout changing the specific calibration within the EEPROM. Each calibration has this PROM data designed into it. While the Delphi systems do have EEPROM`s the dealers have noaccess to calibration data files beyond the VIN # ID`s. Delphi has a lock on calibrations specific to Vin #`s. This is done tostop calibration use for unauthorized applications. When the scan tool is used to read the cal. ID, only approved calibrations are accessible. The EPA has it`s hand deep into this so the data is strictly adhered to in regardEPA spec for AFR`s. The C.A.R.B. has stringent guidelines here in CA.[8D]

 

I think I'm saying "potato" and you're saying "tomato".

When determining injector duty cycle while in closed loop, the ECU consults the VE tables for the present operational conditions and factors it with the AFV. If the calculated duty cycle turns out to be incorrect (for whatever reason) based on the feedback loop from the O2 sensors, the current AFV (corrective VE factor) is derived and stored and is thenceforth used in determining injector duty cycles.

If you've been riding with freer-flowing mufflers and this has caused a somewhat lean condition, the AFV which results from closed-loop operation will effectively shift the entire fuel map upwards so that in closed-loop mode the duty cycles are correct out-the-gate and in open-loop mode things are correct as well for the new conditions.

I believe the intent was for corrections such as altitude change, component wear, etc. I can tell you conclusively that it will compensate for additional fuel provided by a Power Commander, to detrimental effect when the O2 "eliminators" are re-installed.

The only two ways to set the accessible AFV table are to "correct" the "problem" and ride normally in closed-loop or to hook up the Digital Technician and reset it manually.