Quote:
Originally Posted by draper
I think this might be the reason why Sasha's tune wouldn't work:
"Regarding the AF graph – we were using the COBB to monitor AFRs, and their data logging does not offer graphs! They were in the 13.2’s to 13.0:1 at peak rpm."
Most tuners use sniffer that is hung to the exhaust or the HFC bung for accurate readings.
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this is why the second time I went back there , we used his sniffer because the first time he was logging AFR from Uprev
When I had my Berk HFC my AFR gauge was connected and I saw an average of 0.4 AFR
if Uprev read 13.0 AFR my gauge was reading 13.4
this is one of the reason we were able to get some more gain the second time.