blackztpi

car ran great. mods in sig. took iot out with some friends and it has stumbled ever since under load. it's getting worse. it does it badly from a stop sign or in the higher gears. everything ignition is new. It's almost like the opti is crap already, but the car has a new waterpump and has never seen rain. opti is 2k miles old. maybe the harness is bad or the opti is crap?

red95ssclone

was the water pump installed after the opti? water/coolant= kills opti.

blackztpi

no, all installed at the same time. never been exposed to anything.

OBE1 95Z28

Double check that all your spark plug boots are fully seated on the spark plugs and that you haven't burned any wires on the headers.

blackztpi

ok, i might add. This problem is not due to something stupid simple like boots being off and or burnt wires. this is the 2nd set of wires with this same problem, 3rd set of plugs. no burns in the wires or anything. what can i check to see if the opti is working??

red95ssclone

Fuel filter? Kind of sounds like a fuel problem now

blackztpi

i would assume its fine since it fixes itself when i get on it hard....also dynoed fine with the problem.