Originally Posted by
mitjo23
Has anyone every experienced a wideband not displaying the correct Lambda values transformed in HP tuners?? I have a AEM X series and a pro link. I have one channel hooked up so I can see AFR and the other channel hooked up so I can see Lambda values. I used the pre built transforms to add in the wideband and I used the second option, AEM 30(etc), which is supposed to be for the X series. I have a P59 5.3 with flex fuel so when you log PID for commanded AFR and commanded EQ, I can see the 1 Lamba that is being commanded and then the proper AFR for the fuel blend. So in my case, 1 Lambda = 14.12 afr. When I look at my PID for the Wideband, it shows 1 Lamba but the AFR PID reads 14.65?? Shouldn't the wideband AFR read 14.12 in hp tuners when its at 1 lambda?? AEM says 1 lambda shows 14.65 on the gauge for AFR for gas. So when I log EQ at 1 lambda, which should be 14.12 for my fuel, my afr is showing 14.65 on the gauge and in hp tuners. My EQ error is about 0 but my AFR error is positive about 3.8% because its comparing the Commanded 14.12 to the wideband 14.65 because that's what is programmed for 1 lambda. Is there a way to make a custom transform or math to change the AEM conversion to display a reading of 1 Lambda for EQ and then the proper AFR at 14.12 in HP tuners?? When I compare my VE tables to fuel trims, I'm obviously showing lean in AFR error but I'm between +/- 1 in fuel trims and EQ error. I previously tuned VE and MAF in AFR and I was all over the place smh. Now I'm trying to tune in Lambda but I'm also OCD and want to verify everything using AFR as well. Can this be done? Any insight or advice would be helpful. Thanks in advance.