car runs horrible

[Gordon1987]

325i computer system. when cold the car runs good but when at operating temperature the car runs rough and bearly idles and sputters while revving out. any thoughts?

[nebulous123]

what motor do you have? if you have an ETA and have an "I" comp that might cause some serious issues.

[Gordon1987]

i have the eta block with an I head

[nebulous123]

did you just finish the build or been running it for a while and all of a sudden this started happening?

[Gordon1987]

i have been running the eta computer just put in the I computer and this happen wanted to know if im missing anything im new to the I computer

[TurboJake]

What all did you swap over to run the I DME?

Are you running the I or E intake manifold?

The more descriptive you are with your setup, the more we will be able to help.

[Gregs///M]

02 sensor. You should have the lambda code 1221 tho. Mine did the exact same thing, runs great at cold but poor idle when fully warm. Replaced o2 sensor and mpg and idle quality back to normal.

Also vacuum leak might be possible, try a smoke test.

[Gordon1987]

All I swapped over was the afm, idle control valve, tps, and I'm running the E manifold.. I don't have the o2 sensor

[TurboJake]

You didn't swap the harness?

[Gordon1987]

Yes I did.

[TurboJake]

Injectors?

[Gordon1987]

440 cc I had them on with the E computer untuned and I was able to drive the car fine. Also the car is turbo