ive been having a problem with my car hitting the fuel cut for about 2 weeks now i tried lowering the boost to 17 pounds just to be safe but it still happens, it happend usually 3rd gear wot 4500k. so i did some research and someone said it maybe the spark plugs so i installed new ones today bosch platinum 2 part # 4312 on the box. iafter the install i took the car for a 2 mile drive and it seemed to be running better and ideling better as well. then i tried to get on it after it warmed up and it starting sputtering almost like it was farting with no power at all whats the deal? are these plugs garbage? anyone else using them?

 

Not garbage, but not great either. But since they are new, they should be fine. I'm guessing the gap is incorrect. You're probably getting a misfire/blowout so you'll need to gap them smaller.

 

Mods help! Do you have the magnacore wires? If so................thats your problem!

 

throw away those platinums.
they suck they will cause misfires
either buy stock ones or copper NGK's
never use bosch

 

Platinum will last longer but Copper conducts MUCH better. the spark is probably blowing out...

 

I use NGK Iridiums, pricey but well worth it IMO