I keep getting a PO300 Random/ mutiple missfires i look at my missfire counters and all the cylinders are missfiring #3 & #8 have the most but not buy a huge margin cyl 1,2,4,5,6,7 are all in the 1300 misses where as 3&8 are in the 2000 range i pulled #3 and #4 plugs and the look good my fuel trims are in open loop while looking at the freze frame data when the light comes on on this particular case:
SHRTFT1% 0.0
LONGFT1% -1.6
SHRTFT2% 0.0
LONGFT2% -1.6
The light mostly comes on in the morning while in open loop but also comes on when hot. Also should a Maf sensor be flowing more than 18.37 grams per second with a 90mm slp maf sensor its getting to really be a pain in the *** to keep having this light come on

 

Did you ever have your misfire tables de-sensitized when you installed the 3500 stall?
When people talk about "tuning for a stall", that is one step of it.

 

Not that I know of, but why would that happen when I start it up ?

 

The car is still misfiring mostly first thing in the morning but also when im driving here is the freeze frame data from when it set the code
LOAD% 5.5
ECT 185
SHRTFT1 6.3
LONGFT1-0.8
SHRTFT2 7.0
LONGFT2 -2.3
MAP INHG 15.4
RPM 1116
MPH 24
MAF LB/MIN 1.959
TP%0.0