Here is the story part II:
Stock 87T 115K
Tuned up, new pcv, o2, coil, mod, r44ts plugs, seafoamed, and misc vac lines
failed with a 2.300 HC
Then I installed new 32lb inj, billet alum vac mod, welded cracked header, MSD ignition wires.
Failed with a 2.500 HC!
WTH?!
What else causes misfire? Car drives smooth idle isnt the best but alot better after I did all this work.
I did a scan at cruise yesterday 40-45 mph GM chip.
Temp: 197-200* BLM: 107-115 INT:128 o2s: drop very low when I release pedal up high as 600-790 MAF: is suspect 236 max @ WOT.(but I dont think that would cause hi HC/misfire)
Could the NEW coil and/or module be no good, the mod is a auto zone and the coil unkown brand.
Stock 87T 115K
Tuned up, new pcv, o2, coil, mod, r44ts plugs, seafoamed, and misc vac lines
failed with a 2.300 HC
Then I installed new 32lb inj, billet alum vac mod, welded cracked header, MSD ignition wires.
Failed with a 2.500 HC!
WTH?!
What else causes misfire? Car drives smooth idle isnt the best but alot better after I did all this work.
I did a scan at cruise yesterday 40-45 mph GM chip.
Temp: 197-200* BLM: 107-115 INT:128 o2s: drop very low when I release pedal up high as 600-790 MAF: is suspect 236 max @ WOT.(but I dont think that would cause hi HC/misfire)
Could the NEW coil and/or module be no good, the mod is a auto zone and the coil unkown brand.