Z33@TOR

need help...just changed out the old plugs to Denzo Iridium IKH20. But the SES light came on after driving for a while, now i have already reset the ECU/light 5 times but the light still come on after some driving.

The Denzo plugs came with 0.4mm gap, no misfire and power is good/better, idle whet up a bit to 1K rpm...everything seems fine except the light

also the car has Technosquare reflash and full exhaust too (headers, test pipes and exhaust). What could the problem be?

Thx guys

1 2 NV

Well for starters you could tell us what code you are coming up with? lol Is it P0300?(random/multiple cylinder misfire)

Z PHAT Z

iTrader: (46)

I jsut changed out my plugs to 1 step colder and have the SES light came on. I just reset it the ECU with the pedal and it's gone. Sorry can't help much.

Z33@TOR

Where can I check the code? at the dealer? I'm afraid they will reflash my ECU and lost all my TS programs...
I didn't notice any misfire though while driving hard on the track and on street

jpc350z

Advance auto stores will do it for free..

zzzya

iTrader: (2)

Follow the instructions on TS's website for determining the codes. If you know how to reset the ECU with the gas pedal then you can get the codes. Also, the dealer can't erase your TS reflash unless they have the proper equipment and I highly doubt that. They may have Consult II but that is more for reading codes and other diagnostic information. Is the car running smooth?? Also, your plug gap should be closer to 0.44. I would double check all of your plug wires to make sure you put them back on the correct plugs. First things first though, we need to know the code because it could be completely unrelated.

Z33@TOR

Thx guys. I will try to gap them to 0.44 and see if that will cure the problem.

I thought the steps on TS website is for resetting/turing off the SES light? how can i check codes with that procedures?

Thanks