heres my issue.. I did Headers and cam all at one time.

i went straight to the tuner, and had it tuned. I immediately started having problems with p0171, p01074 which is lean on both banks.

The car wont idle on its own when you first crank it up, and You can see where its running rich dumping fuel

I notices both header collectors leak at the slip fit piping....

If i reset the ecu, and start it up, It runs on its own and everything untill it learns the fuel trims, after about 100 miles its back to the same old ****.

Do you guys think this is my issue?

 

Very well could be, if there are any leaks near the 02 sensor's they will see the free air and interpret it as a lean condition, and dump fuel.

 

would that explain my idle problems?


I need to keep the exaust removable, Im thinking about those expensive V bolt clamp setups and weld up the rest of the system..

will that work good?

 

Yes, leaks in the exhaust will cause the trims to add fuel and will cause the idle problems you describe... Gotta get it sealed up...

 

this is a dumb question but do u still have egr hooked up.

 

i'm having the same codes being thrown and i have a small exhust leak, and i do have the egr hooked back up. can this cause a problem? sorry idont mean to hijack but im not having any luck in my threads...

 

yes it can if the egr valve is stuck open...it will act like a vacuum leak and cause rough idle.

 

i am having the same codes pop up . but my z doesnt idle rough . still a leak or just my tune has got it throwing these codes