burnzy

Talking about 470bhp ish and around 20-25 psi iirc, everyone always shouts about using coppers, noticed MSD sell iridiums and also list there benifits, is all the scare mongering of tips breaking off and not being reliable just internet talk? I'm currently running around 350bhp and 15psi iirc and have no problems with the iridiums I'm currently running.

costina

iTrader: (1)

Over 400bhp and 400lbft and 36 psi peak

Caddyshack

I can't remember but can check what I have on 2.2 bar boost and 469bhp.

cossynut2

I have been using them for last 3 years ,450bhp 2 bar boost with no problems at all.

burnzy

Thanks guys, just Internet bollocks then.

Mark Shead

3bar of boost 978hp evo 2.9bar 838hp yb tells you look at the mapping and not the plug for tips failing off.

Mark

Glenn_

iTrader: (1)

I've used the ngk iridum plugs all the time in the cossie. Mine's about 300 boo so not massive power.

burnzy

Thanks mark and glenn, I knew I'd get a well informed answer on here and shows how much bollocks is on the internet, people rave about sidefires and coppers, and believe iridiums are crap because their uncles brothers cats 1.8t snapped all the tips off the iridiums and ruined there engine

Glenn_

iTrader: (1)

Well I've had my cossie 11 years and it's always had irdiyms in it.

It had a set of champion plugs in when I got the saff and they were shite .

Paul_RS

iTrader: (4)

Myself and a couple of my friends have had iridium fail for no reason. Tips don't fall off, they just stop producing spark. They seem to be a lot more delicate than other types of plug.

Adam-M

More likely generic maps and chips that det

Paul_RS

iTrader: (4)

Mine's live mapped by MSD. The others were live mapped by NMS.

Turbosystems

iTrader: (5)

Ngk r7435-9 you'll love the plug but not the price

costina

iTrader: (1)

Seen those between 15 and 28 quid each.....

Are they that good Tony ?

stevieturbo

Total waste of money spending that on a spark plug.

If you're going to squander it on "racing" plugs at least get the type with the more robust electrode

http://www.sparkplugs.co.uk/ngk-raci...k-plug-r7436-9

But I'd still say those are a waste of money too ! lol