WarrenBoostit
Member
Hey everyone, I own a 2018 58k mile SHO with the gearhead AO tune, intercooler and HPFP, as well as a few other common mods running 93 Octane, that I actually purchased from another member of these forums. Today I was driving in very cold temps (10 degrees Fahrenheit) when I noticed that on pulls that brought the car over 0 PSI, the KR reading in degrees would dip into the negatives, usually around -0.2, but even down to -2.25, and seldom positive, but occasionally I'd see +0.5, anything else with negative PSI was 0. I'm hoping that Fords trend of using negatives to mean adding timing and positives for pulling timing applies here; the car doesn't feel down on power (I don't think), the OAR is staying at a steady -0.96 with the intake pressure at -10.5 PSI idle(already had to replace the MAP sensor once so far so I know that's probably accurate), nothing really seems out of the ordinary yet, not hearing any pings or leaks, other than it seems to be hanging on to 4th gear a bit longer than I remember.
Would anybody have some insight as to what may be going on here, and how worried I should be? I should probably collect logs; my guesses are it could be a bad knock sensor (the prior owner removed the under engine cover because it was triggering it when it flapped in the wind), oil in the intercooler, a vacuum leak (please god no), winter gas, or maybe the much increased wind pressure today and cold temps had an impact? I feel like many of these would've triggered codes or at least changes in my OAR, temps and/or intake pressure.
I'm new to SHOForum, though I am well read on the previous owners posts here, and it really seemed like this car never gave him trouble, and on its good days it really drives amazing, however in the 5 months I've owned it I've already replaced the MAP sensor after being sent into limp mode, replaced the battery as the prior somehow was murdered in a week and a half of not driving, dealt with some windows freezing and being unable to roll down, am noticing a slight bit of shinyness that hopefully is just condensation on the outside of tubes leaving the air filter, and am gearing up to do a full rotor replacements after debris caught in my rear brake gored out the rotor. I feel like I'm receiving the crash course in Taurus/SHO issues, and am really looking for a bit of good news or advice.
Thanks!
Would anybody have some insight as to what may be going on here, and how worried I should be? I should probably collect logs; my guesses are it could be a bad knock sensor (the prior owner removed the under engine cover because it was triggering it when it flapped in the wind), oil in the intercooler, a vacuum leak (please god no), winter gas, or maybe the much increased wind pressure today and cold temps had an impact? I feel like many of these would've triggered codes or at least changes in my OAR, temps and/or intake pressure.
I'm new to SHOForum, though I am well read on the previous owners posts here, and it really seemed like this car never gave him trouble, and on its good days it really drives amazing, however in the 5 months I've owned it I've already replaced the MAP sensor after being sent into limp mode, replaced the battery as the prior somehow was murdered in a week and a half of not driving, dealt with some windows freezing and being unable to roll down, am noticing a slight bit of shinyness that hopefully is just condensation on the outside of tubes leaving the air filter, and am gearing up to do a full rotor replacements after debris caught in my rear brake gored out the rotor. I feel like I'm receiving the crash course in Taurus/SHO issues, and am really looking for a bit of good news or advice.
Thanks!
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