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10-13-2009
I've got a 2004 GP GTP Comp G. I've got a random miss fire and I've changed the spark plugs: autolite 104. and changed to zzp wires.
So I'm thinking of changing the Coil packs...So i guess the question is what is the best coil pack to go with...OEM or Aftermarket?
10-13-2009
why did you change the plugs to a colder heat range? are you modded?
coil packs are OEM all the way. aftermarket coils suck (there are only MSD anyway). they are basically eye candy.
10-13-2009
Stick with stock coil packs.
10-13-2009
Autolite 104's in a stock car = fail.
Get autolite 606/605's. And just get coils from Morad.
Morad Parts Company - 3800 Motors, Transaxles, & Stock Parts
10-14-2009
MSD coils actually dont perform as well as the stockers and X3 on the plugs...unless you have dropped pulley sizes, go back to a warmer heat range. Your gas mileage will suffer and you wont be running at peak performance.
10-14-2009
X2Originally Posted by Bio248
10-14-2009
Get a multimeter or ohmmeter and mesure the resistance on the coils. Should read between 5k ohms and 8k ohms. Although not recommended, you should not be getting misfires running 104s on a stock car.
10-15-2009
Thanks, I called Morad...Got to love that place. Ordering the coil packs tomorrow. $25+s/h under 40,000mi on them.
10-15-2009
Always a great place to do business with.
10-16-2009
what did you gap them to??
10-16-2009
I think .055 for 104s ? its a guess, im using 103s n there at .050
10-16-2009
is it a stuterd or missing out bad????
you can gap the plugs up some to 60. the lower the gap, the ruffer the idle. gas will also play a part in stutering at idle. does it miss going down the road?? just idel??
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