well i got my car tuned on 117 and 92 octane...i have the AMS GT35R..everything else as well but not the 2.3L or intake manifold....i tuned it with AEM EMS and on 117 octane i did 28 pounds...the graph on AEM read 28psi perfect...but we tuned 92 octane and it started at 20psi and raised all the way too 25psi...i have a brand new hallman mbc...and dont know why its set perfect on race but not pump..car is still fast as all hell but when it starts to spool it read 20 then on the way to 8000rpm it raises to 21,22,23,24,then boostin 25..if anyone knows what could cause this let me know..not a huge problem was jw...thanks