hello all
so i was emailing with my tuner about getting my in dash AEM wide band integrated into the AP for logging purposes.
also asked why the AEM and the AP readouts generally agree with each other....but the AEM shows AFRs going lean near redline 13:1ish while the AP stays 11:1ish
the tuner says:
Can't speak to discrepancies without actually diagnosing it. Usually an air leak or installation thing with the aftermarket sensors. They're highly sensitive to that.
he told me that since he cannot verify the install of the bosch sensor i put in the down pipe. he cant determine which one of them is more accurate.
said that the stock sensor in the up pipe is a wideband.... at one point goes on to say that he used a dyno AFR sensor when he tuned the car about two years ago because the stock AFR is not accurate for open loop fuelling.
if it is a true wideband then why did he need to use a diffrent one for open loop?
i did a fair amount of reading on AFR and O2 sensor tech.....learned about a nernst cell, planar design, zirconium dioxide then i looked at Denso's site and............ i still don't know what kind of cell a oem Denso uses
does anybody know what cell the oem Denso AFR sensor uses?
thanks in advance!