Think I will be running too lean?

[M-technik-3]

OBD I conversion on a M52 with red label 413 dme and running 17 lbs/hr green injectors. Just running this temporary till I put some 21.5's back in and I get a properly tuned chip for the swap.

[jeffmn8]

Just don't plug the o2 in and it should run more rich than normal..

[M-technik-3]

guess I could try one of my older TMS chips designed for 17lbs injectors

[hwy84]

Just don't plug the o2 in and it should run more rich than normal..

^ Bad plan.

You should be fine. The S50 used those injectors, and was 3.0L. You just basically built a 2.8L S50, with milder cams.

Leave the O2 sensor plugged in, and run the 17lb chip. The O2 sensor will sense lean or rich, and adapt the map accordingly. As long as your knock sensors are hooked up, you should be good to go.