Originally Posted by
JesseJamessrt6
have some real logs from a couple 1/4 mile passes finally. Strange how the AFR starts rich and then by the end of the run leans out. I am also really surprised that with just a 62mm SC pulley I was showing up to 21 psi of boost. The last few logs the boost readings were really really low and not consistent so I am wondering if it failed. I also threw the P0108 over boost code on the last run.
Here is a log spinning most of the way down the track, I suck with street tires.
Here is the other log with more consistent TPS and RPM but the boost is readins are wrong

Wow, that is high boost numbers you got there. How is that possible? I have the 61mm pulley mounted but never see higher boost then 19.6PSI.