just got my 1992 dodge stealth twin turbo.it is stupid fast.but when it gets hot like a 10 min drive it starts missing + the tach goes all over the more you accelerate the lower the tach goes.it bounces all over but the idle does not change.I put a used power resistor in it + a brand new mitsubishi coil pack.checked the wires.car has been garaged in the winter.so no salt.the car stalls once this all starts happening when coming to an idle.the first coil pack closest to the motor when the plug wires all rmoved make the car run better when all this happens.(that is why we replaced the power resistor + coil pack).if car is kept off idle it won't stall.when car is cool all is perfect.I cannot get data on my scan tool.but code 31,44,52 + 54 come up for codes.I am lost has anyone else had this nightmare.Thanks for your help