Im gettin ready to do a plug change on my car, what the best firing plug on the market?

 

AC Delco, atleast I've had no problems with them.

 

i love my bosch +4 plats . .if you dont have a supercharger or nos . .thats the plug id go with . .a little pricey but its well worth it for the best plug on the market

 

I'm going to beg to differ in the Platinum +4s.

Literally dozens of people will complain about them, including myself. I honestly thought that the stock platinum plugs performed better. After a few thousand miles, three of the platinum pucks had broken off. Probably bounced around in the chamber for awhile before being spit out the exhaust valve and landing in the catalytic converter. I can name a few people and board members that have switched out +4s to NGK TR55s, and won't use anything else. I have TR55s, and am sold for life. And for $6 a plug (or however much they are), they better be able to wipe my ***, make me coffee in the morning, and increase my hourly wage. A set of TR55s cost 1/4 as much as Bosch Plat +4s.

I'll never buy them again.

 

Stock Delco Plats reportedly lose their pucks at around 60 K rather than the 100K advertized.

Ngk coppers (cheap) conduct better than the plats or iradiums but the plats will last longer and the iradiums even longer.

Read some negative stuff about the Bosch 4s, but can't say if for sure it is true.

I'd suggest going with the NGKTR55VX Plats or the NGKTR55IR iradiums.

Can't recall anyone bad mouthing NGKs.

Or if you like changing plugs often, go with the NGKTR55 coppers.JMHO

 

That's easy for each to answer: The one we each are running in our cars at this particular time.

My point is there are a number of good plugs on the market. I doubt there is such a singluar identification as the "best plug" that we all could agree upon.

 

AC or NGK, Bosch +4's are crap IMOP

 

The NGKTR55IR iradiums Work GREAT and they will OUTLAST all the other plugs!!!
So you will not have to replace them as often.