Best Plug?

[Nyyankees3511]

I changed my sparkplugs back in sept to bosch duals but i feel like they are garbage. Whats the best plug i can buy for this car performance and smoothness wise? Whats the oem sparkplug is it denso? Thanks

[bassthrive]

Denso PK20's are stock. There are also IK20's, iridium plugs, more expensive. I did the oem platinums (PK20) at ~65k. Our cars dont like Bosch plugs much.

[Grazi07]

If supercharging is ever part of your plans, you might as well get the Denso Iridium IK22's. Search around, I bought mine for $10/per.

[Nyyankees3511]

I was looking at iridiums but solaras need dual electrodes? Am i right? My car feels like it has no low end power, except for the first 2 weeks i put them in.

[SpeedSTARs]

Big fan of the NGK IX Iridiums.

[Nyyankees3511]

Id go with iridiums eventhough they are a lot, but a sticker on my hood says to use dual electrode only.

[JavaJoe_2]

I have a set that I would let go for $50 shipped.
Brand new, never used.

[DatSRBoi]

I thought for boost that Copper plugs be better then the irium stuff?

[SpeedSTARs]

Id go with iridiums eventhough they are a lot, but a sticker on my hood says to use dual electrode only.

My thoughts on Spark plugs is that you should pick the plug with the most spark. The experience I felt with multi electrode/ ground prongs designs is that they benefit the DOHC to SOHC design engines. Mostly in the area of long term durability/ service life compared to regular single electrode plugs. For instance the Bosch+4's, had a faster reaction time compared to the single Denso Iridiums. However, the Denso's seemed like they were more efficient because of the better fuel economy I received with them. The only thing I didn't like about the Denso's Iridiums was that they had a very small electrode tip compared to the NGK ones. When it came time for another plug change, the Denso electrodes tips were pretty must gone and packed with carbon build up. Mostly in my case, the car ran too rich. Anywhere, there you go. You can basically run any plug you want. As long as you get the proper size plugs, insulator depth (ceramic jacket that wraps the electrode) and most importantly the right temp plug. Just remember, not to cold of a plug. Because you’ll have a heck of a time starting the car in the winter months where the temperatures reach 35 degrees (depending on where your located).

Blah,blah...etc.

[Nyyankees3511]

So i should ignore that sticker? Does it really make a difference, or should i just use oem spark plugs? If not, iridiums only come in single prong and im guessing it wont harm my engine.

[SpeedSTARs]

So i should ignore that sticker? Does it really make a difference, or should i just use oem spark plugs? If not, iridiums only come in single prong and im guessing it wont harm my engine.

Yes you can use any spark plug (use at least platinum’s). However, just make sure to get the proper temperature, thread pitch and most importantly the correct gaps. Just stay away from Split fires. They are junk! My buddy had they in his '87 GNX Grand National, and the outcome was that they kept fouling out on him.

[Jai_Jai_Binks]

I've used denso platinm's since i'm not s/c

[Nyyankees3511]

I bought the oem denso iridiums for 02 and up solara v6s. They gave me the wholesale price.

[Nyyankees3511]

well i changed my plugs to the iridiums and the car feels better. But i noticed with these and the boschs not sure about before that because i havent had the car long, but when i shut the car off it vibrates/shakes a little, also when im standing at a redlight i have a little vibration in my steering, what could be the deal?

[TadS]

but when i shut the car off it vibrates/shakes a little, also when im standing at a redlight i have a little vibration in my steering, what could be the deal?

I would check your motor mounts.