I just got tuned for my 35r and meth. I have one step colder densos in the car right now and the ignition was breaking up bad as hell on the dyno. I put on a sun auto ignition amp and i know they are fouled. My question is, should i just get another set of the 1 step colders or go two step with the meth? Or will that be too cold?

 

anybody??

 

bpr8es - ngk

 

br8es for copper or br8eix for iridium - dont get bpr cause its a prolonged tip which isnt good for high boost

 

gap at .18

and I see you upgraded the ignition. now if there is still an issue than you need the AEM EMS.

 

this is a evo IX btw.. honesty i dont wanna pay 150bucks for NGK's. my friend runs 26psi on his 20g with meth with the densos and has no probs what so ever.

 

I payed 10 bucks for mine.

try the 1- step colder which is a 8 series. gap no lower than .18

if this don't work than you need to turn boost down OR AEM ems. thas it dude?!

 

Buschur Racing has some copper plugs for the Evo IX. You can try those. They cost $25 for a set.

 

i have a 35r and run meth and i use ngk bpr8es gapped to .22 and have never had any problems

 

No i dont need an ems... they were fine, they just were fouled on the dyno cause they were gapped at .27 we took them down to .24 on the dyno and no i just need new ones.. I was just wandering if two steps colder is too cold?

 

rule of thumb is one step colder than stock for every 100 hp more than stock you make. This is from the NGK website.

The colder plug won't clear up the ignition miss though. That's a separate issue and it sounds like you know they were fouled.

Just another datapoint.... I'm running 30#'s boost at a gap of .022 with no miss on NGK's.

 

what kind of power did you put down ?

 

if he is running that sun ignition then he should gap them that low. (0.18) should he?

 

.018 is awfully low regardless. I'd be looking for other mechanical/tuning issues that would require such a low gap. Maybe a weak ignition coil, plug issue, timing, etc....

 

In my experience its the ignition box, the sun box is an improvement but not enough to get you what you need to keep things clean. You shouldn't have to gap plugs that low with a additional box. Also with meth or water injection you do not always want to drop plug heat levels. I have the best luck with the stock heat range on alky/meth injection.