Hey Guys,

Over the weekend i changed my plugs from stock because i was getting a slight missfire every so often, maybe 1 in every 10-12 pulls

So i got BPR8ES and gapped them to 0.6mm (0.024) and it seems to be worse the it was with the stock plugs in the car

I done some reading to maybe gap them to 0.45-0.5mm (0.018-0.020)

What do you think, its only doing it slightly at the moment on Full Boost WOT

 

I got the same issue going on ..This means your in need for a cop ignition or a dli box..I gaped mine to .19 on my denso ikh24 and it went away but when you have to gap them down that much there a ignition issue..Try the .19 also how much power and boost are you running??

 

26psi around 360whp

I seen somewhere but cannot find it there was someone selling 4 ignition coil setup for stock ECU i cant remember the vendor but it was pretty cheap i really want to know what its called or a link because if thats my issue then it needs to be done

Just saying though its been running that boost and power for about a month now and it wasnt missfiring while i was tuning

 

i got the spoolinup cop kit.... they look nice and are recomended by a lot of ppl

 

Do you think at my power level i need it?

As i said before it didnt do it while tuning only a few weeks later and new plugs hasnt really helped

 

You shouldn't need to buy a COP kit.

Ohm out your Spark Plug Wires. And then Ohm them out when hot. You might have one going bad under Load and HOT.

Also, I would say to take ut the BPR8ES and try to go back to the 7's. Just to see what will change. gap around .22

 

Yeh i didnt think so

The plugs are gapped to 0.024 at the moment will going down that little bit help?

I was going to try gap these plugs down a little first see what happens if that fails ill go back to 7's

 

No need for a cop at this power level just a new set of plugs wires and gap them down to .20..I was getting blow out at 540 whp at 30.5 psi.

 

gap to 0.22 0.24 if it continues try BR8es not P..... some cars dont like them some do. if it still continues then time for new cop.

 

dont think you can change wires on a evo its a coil on plug setup. i didnt have spark blowout even at 40psi i just changed it to be safe lol.

 

Before i get flamed for strting the wire thing. The car does have two wires that can be ohmed.

 

My new plugs are gapped to 0.024 atm (6mm)

Im going to try and gap them to 0.020 tonight and ill report how it went

 

exactly,,2 wires and there black..lol..Tom u sleeping..hahahahahaha

 

And what should the spark plug wires OHM to when hot?

 

Ok i put my stock plugs back in the car gapped to 0.5mm (0.019-0.020)

I put my stock ones back in to go back to the stock heat range

The issue is now resolved no more missfire