6 - Denso Iridium plug
Stock Number: 5310
Part Number: IK22

 

And you may add the Lambda for Bank 2 as well just to be sure bank 1 and 2 are close in sync.

 

Oh crap. I wrote a thread on those plugs (well the IK20, but same except the IK22 are colder).

Please, please tell us you gapped them closer than what they came out of the box! They are not gapped proper for a turbo car.

 

gap too big or too small?

 

They come out of the box too big (wide) and will misfire at high RPM and lots of boost. If you haven't noticed a stutter at WOT yet, when you get your boost problem figured out, you probably will have some misfires...

I do not know why they say that part is for our cars, when it is not even close to the proper gap.

 

Are you saying that once I get my boost leak figured out, if I have stutter at WOT it's because the plugs might be gapped too wide?

 

Yep. Hope you don't but I did and so did some others and I burned my plugs up very quickly. It is an easy fix to re-gap them, but the not so easy part is getting to the plugs...

How about your diverter valves? Are they stock or upgraded? If they are stock may want to look at some upgraded or the new Bosch replacements. That will help hold the greater boost more consistent.

 

They are Agency Power DVs but since that's the easiest and most likely place, I'm going to check there first.

From the logs you can't tell if there is stutter?

 

Can't tell from the logs. There may be a misfire on the banks you can tick in durametric to log any of those. If you get a bunch a light on your dash will blink (but mine only blinked in severe misfires).

I didn't notice any misfires until my boost was around 1 bar. Basically, the high boost blows out the spark with too wide of a gap.

Your DVs should be good then. Def do a boost leak check. Lots of places a hose can be loose etc.

 

Good times. The love hate relationship of turbo'd cars.

 

Yep, but it will pay off big! Let us know what you find out!

 

Looks like you are approaching gimbal lock, flux is off the charts...

 

don't understand..

michael
acute performance

 

It was a joke Michael, run that thing up to 6800 and let's see the logs.

 

lol. i was like drrr?? check post #8 has the latest logs

https://www.6speedonline.com/forums/...ml#post3065246

michael
acute performance