Hey guys,
I have had a check engine issue for about 2 months. I clear the codes and the ones that return are:
P0105 MAP Press ckt problem
P0122 TP or APP Sensor 1 ckt short/low
P0420 Cat efficiency low (it has been running rich, low mileage and occasional backfires, so prob burned it out)
P0452 Evap Press sens sig low/short.

vehicle stumbles at low rpm and when you rev and let it come back down to idle.

I did a real time scan with our snap on diagnostics scanner so i have a realtime idle profile. i did this after clearing codes and doing a ckp relearn.

At warm idle
Open loop
Injector pulse 2.9
map b/w 8.3 and 8.9 hg
map b/w .96 and 1.02v
tps .16-.18 v
baro 29.6 hg ( mid 50's and muggy/overcast)
airflow 3.46-3.52 gm/sec
calc vacuum 4b
iac pos 40-41
idle ideal 900 was variable bw 880 and 920 rpm
ignition 13.3v
spark adv 18*-20*
afr 14.6
engine load 19%
KS noise .39-1.72
actual ckp 0-240 and cycled through the numbers
actual cmp 1-250 cycling
no misfires
evap purge 25%
evap vent sol off
tank press 1.55v
o2 b1 s1 mv 152-879
o2 b1 s2 mv 30-49
actual ckp b/w 12-251
actual cmp 0-250 cycling
cat temp 885* after 10 mins running.