Different Spark Plugs(+Mpg +Hp)?

They look pretty intense.
From my experience fancy expensive plugs do nothing but wear out faster but who know these could be different 
 
Buy a set cant hurt 
 
If you already need new plugs then you will see slight difference in power and mpg but usually usally fancy plugs are not noticeable 

 

Every once in a blue moon they claim to have "awesome brand new fancy spark plugs that do magic". In reality they can't increase power or MPG unless your old plugs were imporoperly gapped or needed replacement in the first place.
 
You don't "gain" anything from replacing spark plugs, you just don't "lose" anything like if you neglected replacing them.

 

Bosch Plantinums are known to be horrendous, especially in non-European motors for some reason.
I put some in my Firebird (same motor as you), because I got them for free, but I saw no noticeable gain from when my old set from the factory were still in. I haven't had any problems, yet, but everyone that did developed the problem after 3 months or so and mine have been for a few weeks.
There's really not much of a reason to get them over normal plugs, imo. Double the price of normal, reliability issues, and no obvious gains in MPG or such
Edit: I have the +2's.

 

If you can afford them, there just fancy plugs. Now days plugs are good for a hundred thousand. Stick with what you got.


If you do not have the proper spark, your not doin nothing.

 

I've heard bad things about those multi pronged plugs. NGK is the brand I stand by, never been dissapointed with em. I use them in both my bikes and cars. I like the V power ones with the thick base

 

 
i've had platinums and they suck. i've had to replace them after the P.O. of my current e30 put them in it.
 
for any e30 owner that reads this thread, don't put them in your e30.

 

I just use champion copper plugs. Cheapest things around and they do their job.

 

None taken! What was bad about the plug? Did it just not fire or was it something else

 

Damn! I got lucky then, all 8 that I bought are working fine. I inspected the hell outta the packaging though because like you said, they're on a shelf and people can drop them. I made sure the packaging had no dings and the gaps looked even (aka not smashed closed). I'll try out NGK next time though, I think the difference was only 80 cents/2 spark plugs. Then again if my champions are working, there won't be any performance difference between them and the NGK coppers.
 
Lol at the walmart girl... Did she even check them after?

 

I don't buy into the multi electrode thing,  its all in the ability to conduct the current.  NGK iridium for life