I have the powerlab kit installed in my '03 track. After getting tuned at Function: Tuned with an Osiris flash I received the SES about a week later. Dave from FT says that it's caused by the large injectors and to keep an eye on it.

I have to take it to Dave but that probably won't be anytime soon since HPDE, drifting, etc events are around the corner. Is anyone else running the PL kit with their SES on? If so, any possible solutions? Can I damage my engine but tracking my Z? Thanks.

 

What's the code?

 

"troubleshooting p0300
oem brand: Nissan/datsun

definition
aa random cylinder misfire detected
probable cause
1. Ignition system fault
2. Fuel system fault
3. Large vacuum leak
4. Maf sensor fault
5. Af/ho2s (air0fuel/heated oxygen sensor) sensor fault"

On a side note. The SES has deactivated (twice) after not driving the Z around for >3 days. It's only when I drive it like a DD does that happen... hmmm.

 

what plugs are you running?

 

might also want to try closing the gap on the plugs.

 

What's your idle at?

 

Green,

600cc Denso Injectors

Jeffie,
about 950-1000 smooth idle.

 

I have the HPX MAF also but I don't think that's the cause.... just sayin, really..

 

My SES light is on also but i kinda just ignore it really.. I'm sure its nuttin really.. I haven't gotten the code checked but the car runs strong and i've experienced no problems at all. It also goes away when not turning the car on for 3 days or so but usually comes back on.

 

you shouldnt have a ses/cel... Im running NGK 1 step colder, osiris, hpx, dw 800cc. No lights here for me... idk why people ignore it lol ( not you elperuano ^ )

 

what dyno did you get your numbers from? I don't want to ignore that thing. Its really annoying to me and I just want it off...

 

Permanent light here as well but I am ignoring it. After some trouble shooting, I believe it's my utec.

 

I'll get the code checked n tell u what it is.

 

If you've got the right plugs and gap (1 step colder), then it's usually tune related.

Do you notice your car driving less smooth than stock in part throttle?

 

In my case nope. Car runs good at WOT or part throttle n idles fine at 750 which was my stock idle or at least NA idle.. More than likely its some sensor.
The SES light comes on for NA guys when they put test pipes without the extended 02 sensors... simple stuff...

 

DJ dyno.

 

yeah but the NA cars dont throw a misfire if you replace the cats.

 

Yea tru, id like to see him troubleshoot it more to find out the exact cause in his case.

 

a miss at startup with a turbo kit is not uncommon. If you get misses while you are driving or everytime you start the car, then you have a problem with your tune or ignition system

 

I happens when I drive around, park for a while, then drive again. when I was driving a couple of weeks ago the ses was flashing, stayed solid for about 30 minutes then turned off