Hello I have a turboed 350z. Its running strsight pipe with no cats. Could that be causing this code? If not, what should I look for to fix this problem?

 

More than likely. Have you got an AFR gauge fitted as this would give you an idea as to where you're at regarding ratio's. If you're running lean then the last thing you want to be doing is thrashing the engine to within an inch of its life. With straight thru pipes and no cats this is more likely to be running lean than rich. You need to get yourself booked in with a decent tuner.

 

I have an Afr gauge and it's saying my a/f is at 14.7/8 most of the time. It has been dyno tune. So is it safe to keep boosting or is this something I need to fix?

 

during my trip to the nurburgring It was turned on the light engine on my Z ...
error code P1273 and P0159 ...
my car has:
tomei camshaft
test pipe
nismo catback
ECU reflashed ...


I deleted the error a couple of times but comes back.
do u think is possible have a crack in the original headers?
or the oxigen sensor is ruined?

 

Reset your fuel trims pull out the fuses near the battery for 10+min and see if that works had the same problem

 

Any more suggestions?