wolf cosworth

Good afternoon ,

confused here.

Had a saphire 4x4 MSD close loop stage 2 this car ran a lot better on irridium IK27 idle , ... then with normal plugs AGR 12PP.

So when I bought my 3dr last month thought put also IK27 in there but the car is for some reason above 4000 RPM running worse and misfiring.

And yes new rotor / cap and leads from MSD installed.

I did not touch the plug gap still at 0,75mm I believe .

Any ideas ?

gr,Steven

DAN400

iTrader: (3)

my mapper says denso irridium plugs are rubbish,
he found they always caused the car to misfire,
not just talking about cosworths here

gibbo frst

iTrader: (2)

ive got the denso in mine and are fine.. think i gapped mine to 0.6 though..

cossie4i+

iTrader: (15)

Set of 071s, no problems at 450bhp

Steve

wolf cosworth

Mmmh , I think wil go back to original any ideas were to get still the 902 spark plugs ?

Mark Shead

I use them on everything and never have a problem,
What boost are you running.

Mark

Parky

Denso run fine in mine, Why would MSD reccommend them if they werent suitable?

wolf cosworth

Hi Mark,

completely standard 3 dr .

But just found by a dealership the 902 items had them still in stock but these are not blue but red ?

Steven

gr,Steven

wolf cosworth

on the saphire stage 2 they were great on the standard 3 door also only on higher RPMs not giving me the feeling now I got somewere else a problem ....:-(