best performance spark plugs

[beat275]

as above for the 2.0t z20net thanks

[disco dan]

I had a Z20 LET 2.0t and used NGK iridiums.

[beat275]

were they any good?

[disco dan]

courtenay sport remapped it and insisted on them, 242bhp 265ft lb torque. I use them on my vec now.

[beat275]

mines is just standard dont want to buy them incase they mess my engine up

[disco dan]

Im sure their nothing too special just a better replacement from standard ones.

[beat275]

what about the leads to the coil pack? any idea where i would get replacement think iv go somthing wrong with them

[disco dan]

not 100% sure, you'd be better off talkin to someone on here with the same engine, but have you tried LMF Vauxhall? http://www.lmfvauxhall.co.uk/

[Keif]

Loads on here about Spark Plugs for the Z20NET. I tried some others from the recommended NGK ones and it ran like a pig.

Stick to the recommended ones - PFR6T-10G. In the Z20NET the ECU gives a small spark to all 4 spark plugs at once, to see which one allows high current to flow across the terminals of the spark plug - this tells it in which cylinder combustion is about to happen, and also whether knock is about to occur, (it doesn't have a separate knock sensor). So the plugs get more of a hammering than in many other engines.

Taken from HERE

They're cheap enough from eBay.

[Caveman_nige]

if your standard you probably best sticking with the standard plugs mentoned by Jezzy.. Some guys use Iridium plugs.. I have tried them all and now use Bio Fuel plugs on mine now...

Coils are expensive from the dealers its best to buy used replacements from Neo Brothers as its much much cheaper.. I have replaced 3 now... are you getting misfire fault codes?